WASHINGTON - The United States and Germany are both warning Russia to use restraint in the Ukrainian region of Crimea.
Ukraine today said Russian troops had taken up positions around a coast guard base and two airports in the region. Russia isn't commenting on those accusations -- but it's confirming that armored vehicles from its Black Sea Fleet are moving around Crimea for "security" reasons.
Secretary of State John Kerry says he has called Russia's foreign minister to express U.S. concerns over the military activity. It could further inflame tensions in Ukraine following the ouster of its Russian-backed president.
Kerry said the U.S. is watching to see if Russian activity "might be crossing a line in any way" and urged Moscow against action that might be misinterpreted as a violation of Ukraine's sovereignty.