In a communication to the Congress, Obama said the move does not target Ukraine, but rather is aimed at those who undermine democratic processes and institutions in Ukraine;threaten its peace, security, stability, sovereignty and territorial integrity; and contribute to the misappropriation of its assets.       

The White House said the US is pursuing and reviewing a wide range of options in response to Russia's ongoing violation of Ukraine's sovereignty and territorial integrity '"actions that constitute a threat to peace and security and a breach of international law.