
MOSCOW — A somber President Vladimir Putin vowed to hunt down and punish those responsible for a bomb that brought down a Russian passenger jet last month, “wherever they are hiding.” Intensified Russian airstrikes Tuesday hit the Islamic State group’s stronghold in Syria that also is being pounded by the French military.
Russia’s FSB security service confirmed for the first time that a homemade bomb caused the Oct. 31 crash of the Metrojet Airbus 321-200 in Egypt’s Sinai Desert and killed all 224 people aboard in what it called “a terrorist act.” The Islamic State had claimed responsibility, saying it was punishing Moscow for its air campaign in Syria.
With Russia striking Islamic State targets in reprisal for the Metrojet downing, France hitting militants in response to the attacks on civilians in Paris last week and the ongoing U.S.-led coalition bombings, the extremists were facing an intensified assault from at least three military powers.
Putin heard the report on the Metrojet bombing at a late-night meeting of his security advisers in the Kremlin that was shown on national television. He and his advisers stood for moment of silence for those who died on the plane.
An unusually subdued Putin called it “one of the bloodiest crimes,” and promised retribution for “the murder of our people in Sinai.”
The FSB offered a $50 million reward for information leading to the arrest of those responsible, and Putin said Russia would be relentless in its pursuit.



