The US will be imposing visa restrictions on Russians and Crimeans who are threatening Ukrainian security.
A statement issued by the White House said the US:
Is putting in place visa restrictions on a number of officials and individuals, reflecting a policy decision to deny visas to those responsible for or complicit in threatening the sovereignty and territorial integrity of Ukraine.
The statement continued:
We call on Russia to take the opportunity before it to resolve this crisis through direct and immediate dialogue with the Government of Ukraine, the immediate pull-back of Russia's military forces to their bases, the restoration of Ukraine's territorial integrity and support for the urgent deployment of international observers and human rights monitors who can assure that the rights of all Ukrainians are protected, including ethnic Russians.