A day after US President Barack Obama said Russia was "not fooling anybody" over its role in Ukraine, Russian Foreign Minister Sergei Lavrov insisted the armed troops were not taking orders from the Kremlin.
"If they are the self-defence forces created by the inhabitants of Crimea, we have no authority over them," Lavrov told a news conference in Madrid after a meeting with Spanish Foreign Minister Jose Manuel Garcia-Margallo.
"They do not receive our orders," he said.
The Russian foreign minister, who left Madrid for a Paris meeting with US Secretary of State John Kerry after the conference, said Moscow would not allow bloodshed to erupt in Ukraine.
Ukrainian troops remain blocked inside their barracks in Crimea in the gravest stand-off between the West and Russia since the end of the Cold War.
Lavrov's meeting with Kerry will be their first since Ukraine's Moscow-backed president Viktor Yanukovych was ousted after three months of pro-European Union protests which left nearly 100 dead.