Obama says US is deeply concerned about Russian military movements in Ukraine.
WASHINGTON - President Obama warns Russia "there will be costs" for any military intervention in Ukraine.
Obama's statement comes as his administration is expressing growing concern over Russian intentions in Ukraine. Secretary of State John Kerry delivered a blunt warning Friday to Moscow against military moves in the country's southern Crimea region that could further inflame tensions.
Ukraine's acting President Oleksandr Turchynov has urged Russian President Vladimir Putin to stop "provocations" in Crimea and pull back military forces from the peninsula.
Turchynov stepped in as president after Viktor Yanukovych fled Kyiv last weekend.
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