Images from Ukraine

1
Uniformed men, believed to be Russian servicemen, stand guard near a Ukrainian military base outside the city of Sevastopol, March 7, 2014.

2
Pro-Russian demonstrators clash with riot police during a protest rally in Donetsk, Ukraine, March 6, 2014.

3
Pro-Russian demonstrators clash with riot police during a protest rally in Donetsk, Ukraine, March 6, 2014.

4
A Ukrainian serviceman stands guard at a Ukrainian military base as a uniformed man, believed to be a Russian serviceman, walks nearby in Perevalnoye outside Simferopol, March 6, 2014.