The Kremlin said for the first time on Tuesday that a bomb had ripped apart a Russian passenger jet over Egypt last month and promised to hunt down those responsible and intensify its air strikes on Islamist militants in Syria in response.<br />"According to an analysis by our specialists, a homemade bomb containing up to 1 kilogram of TNT detonated during the flight, causing the plane to break up in mid air, which explains why parts of the fuselage were spread over such a large distance," said Alexander Bortnikov, the head of Russia's FSB security service.<br />"It (our campaign) must be intensified in such a way that the criminals understand that retribution is inevitable," said Putin.<br />Ordering the country's secret service to hunt down those responsible for blowing up the plane, he said the effort to bring them to justice should be exhaustive.<br />"We will search for them everywhere wherever they are hiding.<br />We will find them anywhere on the planet and punish them," Putin said.
