Teacher:In this task, you are given a text of many news articles seperated by special token "|||||". Your task is to summarize them.
Teacher: Now, understand the problem? Solve this instance: MOSCOW — Russia on Tuesday said that it was coordinating with the French military in sharply ratcheting up attacks on Syrian territory, especially areas held by the Islamic State, as the government for the first time acknowledged that a bomb had destroyed a Russian charter jet that crashed more than two weeks ago in Egypt. 
  
 In a related move, President Obama said early Wednesday that he was open to cooperating with Russia in the campaign against the Islamic State, which has asserted responsibility for destroying the charter plane and for the deadly attacks in Paris on Friday, but only if the government of President Vladimir V. Putin begins targeting the militant group. 
  
 The timing of the Kremlin’s announcement on Tuesday, after France had already begun striking Islamic State targets and had called for a united front against the group, suggested that Russia was using the moment to help repair frayed relations with the West. 
  
 The Kremlin also announced that Mr. Putin and his French counterpart, François Hollande, had spoken by telephone, had agreed to coordinate military attacks in Syria and would meet on Nov. 26 in Moscow. ||||| An Egyptian military helicopter flies over debris from a Russian airliner which crashed at the Hassana area in Arish city, north Egypt, in this November 1, 2015 file photo. 
  
 MOSCOW A bomb that downed a Russian plane in Egypt last month had been placed in the aircraft's main cabin not in the cargo compartment as reported earlier, the daily Kommersant said on Wednesday citing an unnamed source. 
  
 The newspaper, citing a source close to the investigation of the crash, said the epicenter of the explosion appeared to have been at the rear of the cabin near the tail section. 
  
 "According to a preliminary version, the bomb could have been laid under the passenger seat by the window. Its operation has led to the destruction of the frame and depressurization of the cabin, which had an explosive character," the newspaper said. 
  
 All 224 people on board were killed. President Vladimir Putin vowed on Tuesday to hunt down those responsible and intensified air strikes against militants in Syria. 
  
 (Reporting by Lidia Kelly; Editing by Christian Lowe) ||||| Known for his hardline stance and strong public remarks, Russian President Vladimir Putin's latest quotable quote has been making the rounds on social media. 
  
 A tweet by Ms Remi Maalouf, a news anchor with television channel Russia Today, highlights Mr Putin's colourful take on terrorism: "To forgive them is up to God, but to send them to him is up to me." 
  
 Ms Maalouf later said in a follow-up tweet that the quote was false and apologised, clarifying that she had taken it off a Facebook post. 
  
 In the wake of the Paris terrorist attacks on Nov 13 which killed at least 129 people, Russia and France agreed to coordinate their military and security services against Islamic State in Iraq and Syria (ISIS) militants in Syria. 
  
 Mr Putin, speaking to his top military officials, had vowed merciless retaliation for the attacks, as warplanes from both countries unleashed bombs on the ISIS stronghold of Raqa earlier this week. 
  
 "It's necessary to establish direct contact with the French and work with them as allies," he said. 
  
 The urgency of the unusual alliance was also due to Tuesday's revelation that ISIS was responsible for planting a homemade bomb that ripped apart a Russian passenger jet over Egypt on Oct 31. 
  
 That incident claimed the lives of all 224 people on board, most of whom were Russians returning home from a vacation. 
  
 Mr Putin responded by saying it was one of the bloodiest acts in modern Russian history, vowing that the effort to bring ISIS to justice would be relentless. 
  
 "We will search for them everywhere wherever they are hiding. We will find them anywhere on the planet and punish them," he added. ||||| Play Facebook 
  
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 MOSCOW — Traces of explosives were found in the debris of the passenger jet that crashed in Egypt last month, the Kremlin announced Tuesday as it unveiled a $50 million reward in the case. 
  
 A senior Egyptian official also told NBC News that two employees at Sharm el-Sheikh airport had been detained in connection with the Metrojet bombing. Speaking on condition of anonymity, the source said the pair were being questioned. However, the country's interior ministry later issued a statement saying that no one had been "arrested." 
  
 Alexander Bortnikov, the chief of Russia's domestic security agency FSB, briefed a meeting of Russia's Security Council late Monday that a bomb equivalent to 2.2 pounds of TNT exploded on board the aircraft. 
  
 "You can definitely say that this is a terrorist act," he said. 
  
 "Retribution is imminent" 
  
 Following the briefing, President Vladimir Putin said "retribution is imminent." The Kremlin launched a massive overnight bombardment across Syria, including airstrikes on the ISIS stronghold of Raqqa, according to U.S. and Russian officials. 
  
 The FSB, which is the successor to the KGB, also offered the $50 million reward for information on who brought down the jet. 
  
 Russian President Vladimir Putin vowed to hunt the perpetrators, saying that "we will find them anywhere on the globe, and punish them." 
  
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 He added: "We won't be wiping tears from our souls and hearts. It will stay with us forever. But that won't stop us from finding and punishing the criminals." 
  
 Putin also used the announcement to reaffirm Russia's commitment to airstrikes in Syria, where Moscow says it is bombing ISIS, the group that claimed responsibility for downing the plane. 
  
 "Our air operation in Syria will not just continue — it must be strengthened so the criminals understand retribution is imminent," Putin said, according to the Kremlin's statement. 
  
 According to U.S. military officials, Russia's overnight bombardment included fighter-bombers launched from its Syrian airbase of Latakia and cruise missiles fired from warships in the Caspian Sea. 
  
 Russian Defense Minister Sergei Shoigu told a briefing later Tuesday that warplanes delivered "a massive strike upon [ISIS] in Syria," according to the Interfax state-run news agency. Shoigu said the strikes hit Syria's Idlib and Aleppo provinces as well as ISIS positions in Raqqa and Der-ez-Zor. 
  
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 Embed We Will Hunt Down Metrojet Bombers and Punish Them: Vladimir Putin 1:04 autoplay autoplay Copy this code to your website or blog 
  
 The Metrojet crash left 224 people dead, most of them Russian tourists. 
  
 The Airbus A321 broke up in midair some 20 minutes into its journey from the resort town of Sharm el-Sheikh to St. Petersburg on Oct. 31. 
  
 U.S. officials have told NBC News earlier this month that intelligence intercepts picked up chatter between ISIS operatives boasting about taking down an airliner after the passenger plane crashed in the Sinai. |||||
Student:
Now that Moscow is on board with the thinking that a bomb brought down a Russian passenger jet over Egypt, a newspaper in Russia is reporting that the explosive was in a surprising place: the main passenger cabin. The Kommersant quotes an anonymous investigator who says the device was likely placed under a passenger seat near a window in the tail section, not hidden in the cargo hold, reports Reuters. How it got there remains under investigation, but NBC News reports that Egyptian authorities have detained two workers at the Sharm el-Sheikh airport. So far, no arrests have been made. Vladimir Putin is talking tough, saying of the terrorists responsible, per the Straits Times: "To forgive them is up to God, but to send them to him is up to me." Russia has offered a $50 million reward in what it now considers to be an ISIS attack, and the New York Times reports that Moscow has begun working closely with France on airstrikes in Syria. President Obama, too, expressed a willingness to coordinate more with Russia, though the Times notes that the two countries' fundamental disagreement on whether Bashar al-Assad should stay in power will limit that. The crash of the Metrojet plane killed all 224 people aboard.