Instructions: In this task, you are given a text of many news articles seperated by special token "|||||". Your task is to summarize them.
Input: Insurgent group’s ‘spring offensive’ begins with one of its bloodiest ever attacks in Afghan capital 
  
 Dozens were killed and more than 300 injured on Tuesday in a Taliban suicide attack on the headquarters of an elite military unit in central Kabul, one of the group’s bloodiest ever attacks in the Afghan capital. 
  
 The violence marked the start of the Taliban’s annual “spring offensive”, named this year for former leader Mullah Omar. 
  
 The scale of the attack, after months of Taliban advances around the country, has heightened fears that Afghanistan faces one of the most violent years since Omar and his government were toppled from power in 2001. 
  
 The violence began just before 9am local time, when a truck packed with hundreds of kilograms of explosives was rammed into the compound of a security force that protects Afghan VIPs and government officials. 
  
 At least one fighter dressed in military uniform raced inside and battled police with an assault rifle. Outside there was carnage on streets that had been crowded with people waiting at a nearby bus stop, or on their way to work or school. 
  
 “First it felt like an earthquake, and then came the powerful sound of the explosion. I looked around, and everything was full of dust,” said Gol Rabi Stanikzai, a police commander who was at the scene when the bomb went off. 
  
 “All the way down here, people were injured,” he said, gesturing to several hundred metres of mangled shopfronts and shattered glass along the Kabul river. 
  
 At least 30 people were killed, most of them civilians, said Sediq Sediqqi, an Afghan interior ministry spokesman. That number is expected to rise as some of the injured lose their battle, and more details emerge of what happened inside the heavily guarded military compound. 
  
 It was the deadliest attack in Kabul since at least 2011, when a bombing at a Shia shrine killed more than 50 people. That attacker used smaller amounts of explosive to target victims packed closely together, apparently carried in a backpack. 
  
 The truck bomb should have passed through security checkpoints to reach a part of the city just a few hundred metres from the presidential palace, other security compounds and most foreign embassies, raising serious questions about security in the capital. 
  
 “With no doubt there was a security vacuum and that needs to investigated,” Sediqqi told the Associated Press. 
  
 Facebook Twitter Pinterest Afghan security officials at the site of the Kabul blast. Photograph: Hedayatullah Amid/EPA 
  
 There was so much explosive used that it was felt on the other side of the city and shattered windows up to a kilometre away, and caused large numbers of injuries. 
  
 A spokesman for the public health ministry put the number of wounded at 327, and Mohammad Aref, a 20-year-old shop owner whose windows were shattered by the explosion, said he personally saw at least 50 wounded people being carried away. “The clothes of many of them were soaked in blood,” he said. 
  
 Facebook Twitter Pinterest Afghan health workers tend to an injured man. Photograph: Rahmat Gul/AP 
  
 Baryalai Sarwari, 20, who owns an electronics shop close to the site of the attack, said the explosion showered his uncle and infant nephew in glass. Both survived, but he saw many who didn’t. 
  
 “All the dead today were civilians,” he said in response to the Taliban spokesman’s claim that the group targeted its enemies in government. 
  
 Facebook Twitter Pinterest Schoolgirls walk past police forces near the blast site. Photograph: Massoud Hossaini/AP 
  
 The Afghan president, Ashraf Ghani, condemned the attack as a cowardly attempt to grab headlines by a group that could not claim territory. It “clearly shows the enemy’s defeat in face-to-face battle with Afghan security forces”, he said in a statement. 
  
 Few Afghans are likely to be reassured by that message, at a time when the Taliban are increasingly bold and civilian casualties from fighting continue to rise. 
  
 The insurgents last week launched another attack in northern Kunduz province, where last year they captured the provincial capital for several days. 
  
 It was the first time they had held an important town since being ousted in 2001, although local officials say security has now improved in the city and the Taliban have been pushed back in other parts of the country. 
  
 The Taliban’s renewed military confidence comes as Afghan government efforts to restart peace talks, backed by its international allies, are faltering. It has for months been trying to convince the insurgents back to the table, but so far to no avail. 
  
 Taliban announce start of spring offensive in Afghanistan Read more 
  
 While the spring fighting season normally heralds intensified attacks, winter was unusually violent, with sustained Taliban offensives around the country and several attacks on the capital, causing mostly civilian victims. 
  
 In January, the Taliban attacked a restaurant in Kabul frequented by foreigners and affluent Afghans, killing a guard and a 12-year-old boy. Later that month, they killed seven employees of TOLO TV in an assault on one of the media group’s buses. 
  
 On Sunday, the UN released a report documenting an increase in civilian casualties in the first three months of 2016. The report showed that while the Taliban have scaled down their use of improvised explosive devices and targeted killings, the militants are increasingly using complex and suicide attacks in populated areas. ||||| An Afghan medic carries stretcher after a Taliban-claimed suicide attack in Kabul, Afghanistan, Tuesday, April 19, 2016. Taliban insurgents have stepped up their attacks against the security forces since... (Associated Press) 
  
 An Afghan medic carries stretcher after a Taliban-claimed suicide attack in Kabul, Afghanistan, Tuesday, April 19, 2016. Taliban insurgents have stepped up their attacks against the security forces since announcing the start of their spring offensive last week. (AP Photo/Rahmat Gul) (Associated Press) 
  
 KABUL, Afghanistan (AP) — The Latest on the militant assault on an Afghan government security compound in Kabul (all times local): 
  
 1:45 p.m. 
  
 Afghan officials have raised the death toll from a coordinated Taliban attack on a government security agency to 28. 
  
 Kabul Police Chief Gen. Abdul Rahman Rahimi told reporters Tuesday that another 327 people were wounded in the assault — which began with a powerful suicide car bomb attack on the agency compound gates. A group of armed militants then entered the compound and waged a prolonged battle with government security forces. 
  
 The agency is similar to the U.S. Secret Service, providing personal protection for high-ranking government officials. The Taliban has claimed responsibility for the attack. 
  
 ___ 
  
 1 p.m. 
  
 Afghan officials have announced that a gun battle with Taliban militants on the grounds of a key government security agency has ended. 
  
 Sediq Sediqqi, spokesman for the Afghan Interior Ministry, said Tuesday that at least one of the attackers was killed in the battle. A Public Health Ministry spokesman said a total of seven people were killed and 327 wounded in the coordinated assault on a government agency similar to the U.S. Secret Service, providing personal protection for high-ranking government officials. 
  
 The casualty figures are expected to rise. 
  
 ___ 
  
 12:30 p.m. 
  
 Afghan officials have increased the casualty figures from a coordinated militant assault on a key government security agency compound in the capital, Kabul. Ismail Kawasi, spokesman for the Public Health Ministry, said Tuesday that so far 208 wounded people, including women and children, have been brought to area hospitals. An Interior Ministry statement said that there have been fatalities but it was still unclear how many people were killed. 
  
 The casualty figures are expected to rise as a gun battle was still underway early Tuesday afternoon in Kabul. 
  
 ___ 
  
 9 a.m. 
  
 Armed militants in Afghanistan have staged a coordinated assault on a key government security agency in the capital Tuesday morning, wounding nearly 200 people. The Taliban has claimed responsibility. 
  
 The attack, including a suicide car bombing, appears to have targeted an agency similar to the U.S. Secret Service, providing personal protection for high-ranking government officials. 
  
 Ismail Kawasi, spokesman for the Public Health Ministry, said so far 198 wounded people have been brought to area hospitals. 
  
 Sediq Sediqqi, spokesman for the Afghan Interior Ministry, said Tuesday that the suicide attack was followed by an assault by armed militants. The area has been surrounded by government forces and dozens of ambulances have rushed to the scene. 
  
 "Security forces are in a fight with an unknown number of armed insurgents right now," Mohammad Afzel, a police officer at the site of the attack, told The Associated Press. 
  
 Taliban spokesman Zabihullah Mujahid claimed responsibility for the attack, and said that a number of their fighters were currently inside the compound battling with security forces. 
  
 Taliban insurgents have stepped up their attacks recently since announcing the start of their spring offensive last week. 
  
 President Ashraf Ghani issued a statement condemning the attack and saying it, "clearly shows the enemy's defeat in face-to-face battle with Afghan security forces." |||||
Output:
Armed militants in Afghanistan staged a coordinated assault on a key government security agency in Kabul Tuesday morning, killing at least 28 people. The Taliban has claimed responsibility. The attack appears to have targeted an agency similar to the US Secret Service, providing personal protection for high-ranking government officials, the AP reports. Kabul Police Chief Gen. Abdul Rahman Rahimi told reporters that another 327 people were wounded in the assault, which began with a powerful suicide car bomb attack on the agency compound gates. A group of armed militants then entered the compound and waged a prolonged battle with government security forces, which officials say has now ended. Dozens of civilian apartment buildings, houses, and shops, as well as several government buildings, were damaged by the car bomb blast. Taliban insurgents have stepped up their attacks since announcing the start of their spring offensive last week, though the Guardian notes that the winter was unusually violent, with multiple attacks in the capital and elsewhere. President Ashraf Ghani issued a statement condemning the latest attack, saying it "clearly shows the enemy's defeat in face-to-face battle with Afghan security forces." (The Taliban claimed to have just missed John Kerry with a rocket attack during his recent visit to Kabul.)