Detailed Instructions: In this task, you are given a text of many news articles seperated by special token "|||||". Your task is to summarize them.
Q: KABUL (Reuters) - Taliban militants killed five U.N. foreign staff in an attack on an international guest-house in Kabul on Wednesday, deepening concerns about security for a presidential election run-off due in 10 days. 
  
 People flee as security forces secure the area around an international guest-house in Kabul after an attack by Taliban militants October 28, 2009. REUTERS/Ahmad Masood 
  
 The resurgent Taliban have vowed to disrupt the November 7 run-off as U.S. President Barack Obama weighs whether to send more troops to Afghanistan to fight an insurgency that has reached its fiercest level in eight years. 
  
 In another sign of the growing reach of militants, rockets were also fired at a foreign-owned luxury hotel near the presidential palace in the heart of the Afghan capital, forcing more than 100 guests into a bunker, a hotel guest said. 
  
 U.S. Secretary of State Hillary Clinton, on a visit to neighboring Pakistan where there were also deadly blasts, confirmed one American working for the world body was among those killed in the U.N. attack. 
  
 “I strongly condemn the cowardly attack today,” Clinton said in a statement. “The United States remains steadfast in its support for the United Nations and its vital work to help the Afghan people,” she said, adding that 20 Americans had died in Afghanistan in recent days. 
  
 In Washington, White House spokesman Robert Gibbs said the attack in Kabul was an attempt to disrupt the run-off election and “will not succeed.” 
  
 The Taliban said they had targeted the guest-house because of the United Nations’ role in helping organize the run-off. 
  
 “We have said that we would attack anyone engaged in the process and today’s attack is just a start,” Taliban spokesman Zabihullah Mujahid told Reuters by telephone. 
  
 U.N. Secretary-General Ban Ki-moon said in New York that the world body would not be deterred by the attack, which he called a “shocking and shameless act.” Nine people were also wounded, the U.N. said. 
  
 One foreign woman screamed and sobbed as she limped from the guest-house. Onlookers and police carried another victim away using a blanket as a stretcher. 
  
 “It doesn’t look good in there,” a U.N. medic, who asked not to be identified, told Reuters at the scene. 
  
 The United Nations, which has operated in Afghanistan for more than half a century, said it would review security measures following the attack. 
  
 Aid groups working in Kabul also said they would take extra precautions during the election period. “We think it is very important that humanitarian workers are protected,” said Save the Children director of international operations, Greg Ramm. 
  
 Hours after the Kabul attacks, Clinton landed in neighboring Pakistan vowing a new page in U.S.-Pakistan relations. Defeating the Taliban and stabilizing Afghanistan is a key plank of Washington’s regional strategy against militancy. 
  
 Pakistani security forces are also engaged in a bloody campaign against the Taliban near the Afghan border. A bomb killed more than 80 people in a crowded market in the northwestern Pakistani city of Peshawar on Wednesday. 
  
 NATIONALITIES UNKNOWN 
  
 The nationalities of most of the U.N. staff killed in the Kabul guest-house attack were unclear. The sound of gunfire and sirens echoed across the capital for hours. 
  
 President Hamid Karzai’s palace and police said at least one Afghan civilian and three police were also killed. 
  
 Karzai, who is running against ex-foreign minister Abdullah Abdullah in the run-off, denounced the attack as inhumane. 
  
 “Certainly one of the aims of the Taliban attack today was to show that they are a force that can disrupt the poll,” Afghan analyst Qaseem Akhgar said. 
  
 The attackers wore police uniforms to secure entry into the guest-house, police said. A Reuters reporter saw the bodies of three of the suspected suicide bombers, apparently ripped apart when they detonated their explosives, lying inside the compound. 
  
 Abdul Ghaim, a policeman at the guest-house, said police believed the attackers were Pakistanis. Many of the insurgents in Afghanistan either shelter in, or are from, Pakistan. 
  
 A Reuters witness saw a badly burned body being carried out of the building after the shooting stopped. Officials said one female guest was missing inside the building, which was covered with bullet holes, its walls charred and windows shattered. 
  
 Rockets were also fired at the foreign-owned Serena luxury hotel, witnesses and security sources said. No one was injured and there was no major damage. Frequented by foreign visitors and diplomats, the hotel was also attacked in January 2008 when six people were killed. 
  
 DEADLIEST MONTH 
  
 Efforts to stabilize Afghanistan have been complicated by weeks of political tension over the August 20 first round of the presidential poll, which was marred by widespread fraud in favor of Karzai, forcing the run-off. 
  
 Eight U.S. troops were killed in southern Afghanistan on Tuesday, the NATO-led alliance said, in the deadliest month for U.S. forces since the start of the war eight years ago. 
  
 U.S. soldiers make up two-thirds of the 100,000-strong coalition force, with Obama considering proposals to send an extra 40,000 troops or a smaller number. 
  
 Slideshow (9 Images) 
  
 Ahead of that decision, the New York Times reported that Karzai’s brother had been getting regular payments from the Central Intelligence Agency and was a suspected player in Afghanistan’s lucrative opium trade. 
  
 Ahmed Wali Karzai was quoted as denying the report and the CIA neither confirmed nor denied the payments. 
  
 As part of his review of U.S. strategy in Afghanistan, Obama is set to meet Friday with Admiral Mike Mullen, the chairman of the Joint Chiefs of Staff, and the heads of the military services, the White House said. ||||| KABUL – Insurgents Wednesday attacked two guesthouses and a hotel in downtown Kabul that housed United Nations staff and other international personnel, killing at least eight people in one of their most daring attacks on the Afghan capital. 
  
 The assailants managed to take over one of the guesthouses, Bakhtar, but were repelled by security guards at another, the Imperial. They also fired several rockets at Kabul's largest luxury hotel, Serena, that hosts many foreign diplomats, senior U.N. officials and journalists. 
  
 View Slideshow Associated Press An Afghan police officer carries an injured person as smoke bellows from the site of the attack in Kabul. 
  
 A U.N. spokesman in Kabul said that at least five U.N. personnel were killed at the Bakhtar guesthouse and that the toll may rise in coming hours because several guests had life-threatening injuries. 
  
 One of the dead staffers was an American citizen, according to the U.S. Embassy. At least three other people lost their lives in the attack on Bakhtar. No casualties were reported at the Serena or the Imperial. "This is very dark day for the U.N. in Afghanistan," said Kai Eide, the organization's special representative in Kabul. 
  
 The U.N. is heavily involved in preparing the second round of Afghanistan's presidential elections, scheduled for Nov. 7, and has appointed the majority of commissioners on the powerful electoral watchdog whose decision earlier this month to overturn fraudulent first-round results triggered the runoff. 
  
 The Taliban oppose the elections as long as U.S.-led Western troops remain in the country, and have vowed to disrupt the runoff by killing election workers and voters. "We had announced that the runoff election has no legitimacy," a Taliban statement issued on Wednesday said. "Whoever helps and contributes to this process will be targeted. We attacked U.N. workers because the U.N. is the biggest supporter of this process, and our attacks will continue," 
  
 Unlike the Islamist insurgents in Iraq, who blew up the U.N. headquarters there shortly after the 2003 U.S. invasion, Afghanistan's Taliban had until now refrained from specifically targeting the world body. Just last month, the Taliban leadership openly cooperated with the U.N. Children's Fund, allowing its health staff to conduct a three-day polio immunization drive in insurgent-held parts of southern Afghanistan. 
  
 But in mid-October, the Taliban's central leadership, which refers to itself as the Islamic Emirate of Afghanistan, issued a fiery statement against the world body, days after the U.N. Security Council renewed the mandate of the U.S.-led international forces here. "The oppressed people of the world do not trust the United Nations any more because of its partial and unlawful resolutions," the Taliban statement said. "They consider this world body as an extended instrument of America and Europe for the execution of their colonialist policies." 
  
 Wednesday's attack on the guesthouses was unprecedented, said Adrian Edwards, a U.N. spokesman in Kabul. "We've been in this country in one way or the other for the last 50 years, and I don't think there has ever been anything like this," he said. 
  
 Mr. Eide insisted in his statement that Wednesday's attack "will not deter the U.N. from continuing all its work to reconstruct a war torn country and to build a better future for all Afghans." But another senior U.N. official said that in the coming days the organization, which employs a staff of thousands here, will review the security situation and decide whether to evacuate employees or even shut down U.N. programs. "This could be a game changer," he said. "This puts into question our involvement here." Already, the U.N. has ordered its employees in Afghanistan to stay indoors and prepare for a possible order to leave the country. 
  
 The attacks on Bakhtar and the Imperial, both of which are little-known and unmarked, showed remarkably good intelligence collection on the part of the Taliban. "We woke up at 5:45 am to explosions and shooting, and then heard women screaming and crying," said Mohammad Jan, a 48-year-old tailor who lives next door to Bakhtar, in one of Kabul's most heavily policed areas. 
  
 By midmorning the hostage crisis at the Bakhtar was over and the building secured, with firemen trying to extinguish fire amid billowing smoke on the roof. The Taliban attack on the Imperial began at around the same time that Bakhtar was hit. 
  
 "I woke up to volleys of gunfire in my garden. It was scary," said Maite Carrasco, a journalist with Spain's Telecinco TV who stayed at the Imperial. Most of the Imperial's guests were U.N. personnel, and they huddled in the restaurant as security guards fired at the assailants. 
  
 Deadly days Pakistan and Afghanistan have been hit with a series of terror attacks this month. Oct. 8: The Taliban targeted India's embassy in Afghanistan for the second time in two years with a car bomb that killed at least 17 people in downtown Kabul. Oct. 9: A suicide bomber blew up his explosive-laden vehicle in a congested marketplace in the northwestern Pakistani city of Peshawar, killing at least 49 people. Oct. 12: A car bombing aimed at Pakistani soldiers in Pakistan's northwest killed at least 41 people. Oct. 15: A series of attacks on police and government installations left at least 40 people dead across Pakistan. Oct. 28: A car bomb ripped through a market in the northwestern Pakistani city of Peshawar, killing at least 90 people hours after Hillary Clinton arrived in Pakistan. Oct. 28: Insurgents attacked two guesthouses and a hotel in Kabul that housed United Nations staff and other international personnel, killing at least eight people. 
  
 Insurgent rockets hit the Serena at around 8.30 am, just as ambulances were taking out the casualties from the Bakhtar. Seven loud explosions were heard and all hotel guests were evacuated from their rooms and assembled in a secure area. The only visible damage, however, was from a rocket that hit the ground in the garden about a yard away from the lobby, its fragments shattering windows and chipping away small bits of the wall. 
  
 Serena's heavily guarded compound in central Kabul was attacked in January 2008 by Taliban suicide bombers and gunmen disguised as policemen. At the time, they managed to penetrate the building and kill six people. Since then, tough security measures were put in place to deter another storming attempt. 
  
 Afghanistan's President Hamid Karzai Wednesday condemned the "heinous" attack on U.N. personnel and instructed security agencies to reinforce security at foreign installations in the country, according to a statement from the presidential palace. 
  
 A representative of Siraj Haqqani, a leader of a Taliban-aligned group who is considered by U.S. officials to be one of the most dangerous in the country, said in a telephone call that his men carried out Wednesday's attacks and "there are more gunmen in the city." The caller did not give his name. 
  
 Separately, Taliban spokesman Zabihullah Mujahid said in an email to The Wall Street Journal that a group of five Taliban fighters equipped with assault rifles and wearing vests have attacked the Bakhtar guesthouse. He said all of these insurgents were killed after they managed to assassinate foreign guests. 
  
 —Habib Zahori contributed to this article. 
  
 Write to Yaroslav Trofimov at yaroslav.trofimov@wsj.com |||||
A:
Six United Nations staffers and six others were killed today when militants armed with automatic weapons, grenades, and suicide vests stormed two guest houses in downtown Kabul where international workers were sleeping. One of the dead was American. The nationalities of the others was not immediately known. Rockets hit another hotel in the capital popular with foreigners, forcing 100 guests into an underground bunker, reports Reuters. "We woke to explosions and shooting, and then heard women screaming and crying," said a neighbor of one of the guest houses. Security guards rebuffed attackers at one guest house, but the militants seized another and took hostages until security forces regained control, reports the Wall Street Journal. The Taliban—which has vowed to attack those working on next month's runoff election—claimed responsibility for the attacks and warned of new assaults.