Tags: Viktor Yanukovich

Thousands of troops marched across Moscow's Red Square on Saturday and tanks rumbled through streets to mark the 70th anniversary of victory over Nazi Germany, an event boycotted by Western leaders over Russia's role in the Ukraine crisis.

A Ukrainian journalist known for his pro-Russian views was shot dead on Thursday in Kiev, a day after the killing of a political supporter of ousted Moscow-backed President Viktor Yanukovich, driving up tension between Moscow and Kiev.

Moscow was ready to put its nuclear forces on alert to ensure Russia's annexation of Crimea from Ukraine last year, President Vladimir Putin said in a pre-recorded documentary aired on Sunday.