Exclusive - U.S., EU seen imposing sanctions on Russia on Monday - sources

The Russian national flag is seen on a barricade near the seized office of the SBU state security service in Luhansk, eastern Ukraine April 25, 2014. REUTERS/Vasily Fedosenko

WASHINGTON (Reuters) - The United States and the European Union are expected to impose fresh sanctions on Russian individuals on Monday in response to Moscow's alleged efforts to destabilize eastern Ukraine, sources familiar with the matter said.

The sources, who spoke on condition of anonymity, said the EU was expected to name 15 previously unidentified individuals to be sanctioned and would focus on those whom it believes are responsible for the unrest in Ukraine.