MOSCOW - The president of Russia's Chechnya region, Ramzan Kadyrov, said on Thursday that whoever was responsible for the beheading of a Russian man from Chechnya, purportedly shown on an Islamic State video, will be killed. 'Yes, he was Russian-Chechen, he was beheaded .. there are proven facts,' Kadyrov told journalists. 'Whoever killed that man ... won't live for long.' On Wednesday the SITE monitoring group reported there was a video released online by Islamic State that showed the beheading of a man the group said was a Russian spy.