US Secretary of State John Kerry Accuses Russia of Lying

US Secretary of State John Kerry said on Tuesday that Russia was lying when it said there are no Russian troops or equipment in Ukraine, where pro-Russian separatists are fighting government troops.

Fighting has abated in eastern Ukraine in recent days, raising hope that a ceasefire that was due to start on February 15 can finally take effect after the rebels initially ignored it to storm the government-held town of Debaltseve last week.

Western countries have not given up on the ceasefire deal to end fighting that has killed more than 5,600 people, although they remain suspicious of the rebels and their presumed patron, Russian President Vladimir Putin.

Asked during US congressional testimony if Russia was lying when it says it has no troops or equipment in Ukraine, Kerry replied: "Yes."

Kiev and its Western allies say the rebels are funded and armed by Moscow and backed by Russian military units. Moscow denies aiding sympathizers in Ukraine and says heavily armed Russian-speaking troops operating without insignia there are not its men.

The chief US diplomat later elaborated on the need to push back against Russia's stance it is not involved in the conflict.

"Russia ... tragically is sort of reigniting a new kind of East-West, zero-sum game that we think is dangerous and unnecessary," Kerry told US lawmakers when testifying about the State Department budget.

"The question asked earlier about ... how they present things and the lies about their presence in Ukraine and the training, I mean, you know, it's stunning but it has an impact in places where it isn't countered," he said. "Propaganda works."