1Ukrainian servicemen look on as an armed man, believed to be a Russian soldier, stands guard inside a Ukrainian military base in the Crimean town of Yevpatoria, March 5, 2014.
2Uniformed men, believed to be Russian servicemen, march outside a Ukrainian military base in the village of Perevalnoye, outside Simferopol, March 5, 2014.
3Ukrainian Navy soldiers raise their flag on top of the Ukrainian navy corvette Ternopil at the Crimean port of Sevastopol, March 5, 2014.
4Russian soldiers fire warning shots at the Belbek air base, outside Sevastopol, Ukraine, March 4, 2014.