Vladimir Putin stands accused of launching an undeclared war against Ukraine. As fears of a wider war grow, John Sweeney challenges the Russian strongman on the killing in Ukraine.

Vladimir Putin stands accused of launching an undeclared war against Ukraine. He has wrong-footed NATO and western diplomats. His rebel allies may well have the blood of the 298 passengers of flight MH17 on their hands but Putin has gambled boldly, playing on Europe's divisions. As fears of a wider war grow, reporter John Sweeney challenges the Russian strongman on the killing in Ukraine.