French Foreign Minister Laurent Fabius on Saturday called for a political solution to the ongoing tension in Ukraine, the Crimea as the epicenter. “France is deeply concerned by reports of the Crimea, which demonstrate significant movements of the armed forces,” Fabius said in a statement.

Security Council of Ukraine on Sunday ordered the Defense Ministry to launch a full military mobilization in response to Russia sending more troops to the Crimea.

A senior U.S. administration official speaking on background said the Russian military is “full operational control” of the Crimea region of Ukraine, where it is believed that about 6,000 airborne troops and naval are present.