Situationen i Ukraina just nu, del 4

The United States has called on Russia to "immediately" observe a cease-fire deal in eastern Ukraine -- saying that a combined force from Russia’s military and pro-Russia separatists in eastern Ukraine had been targeting international monitors.

In a February 26 statement, the U.S. State Department called on "Russia and the separatist forces it backs to immediately observe the cease-fire, withdraw all heavy weapons, and allow full and unfettered access" to the region for monitors from the Organization for Security and Cooperation in Europe (OSCE).

Washington's call came a day after the OSCE monitoring mission said armed men in separatist-controlled territory to the north of Donetsk had seized one of the unarmed drones that the monitors use to assess cease-fire violations.

State Department spokesman Mark Toner said the United States was closely monitoring growing violence in eastern Ukraine -- including, in his words, the "targeting of OSCE Special Monitoring Mission monitors and the seizure of a Special Monitoring Mission unmanned aerial vehicle by combined-Russian separatist forces."