The United States and European Union plan to impose new sanctions against Russia this week, including penalties targeting key sectors of the Russian economy, the White House said Monday. Self-proclaimed Donetsk People's Republic policemen guard a convoy of international forensic experts, Dutch and Australian policemen and members of the Organization for Security and Cooperation in Europe mission in Ukraine, as it approached Shakhtarsk, Donetsk region, eastern Ukraine, on Monday, July 28, 2014.