49 observe moment of silence in Ukraine 's the Elysee Palace . Prime Minister vows Kiev will wipe out the killers . World leaders hold telephone talks with Putin , Putin . The government blames insurgents in eastern Ukraine .
Hundreds observe moment of silence in Kiev 's Independence Square . Prime Minister vows Ukraine will wipe out the killers . World leaders hold telephone talks with Putin , Poroshenko . The government blames insurgents in eastern Ukraine .