We turn now to Ukraine. A cease-fire there has not ended the violence between pro-Russian separatists and government forces. They did exchange prisoners the other day and said they were going to start withdrawing heavy weapons. But today, Ukraine says continued fighting makes that impossible. Yesterday, a bomb killed two people during a march in support of the government in Kiev. Cease-fire monitors are trying to track all this. They're from the Organization for Security and Cooperation in Europe, or OSCE, and the monitors often cannot even get to the fighting they are supposed to observe. NPR's Michele Kelemen reports.
MICHELE KELEMEN, BYLINE: What started as a team of human rights monitors is quickly turning into something different, according to Lamberto Zannier, the secretary general of the OSCE.