Crimeans Vote on Joining Russia

A man fills out registration papers before casting his vote in a mobile ballot box during voting in a referendum in the village of Pionerskoye, near Simferopol, Crimea, Ukraine, March 16, 2014.

Election officials arrive with a mobile ballot box at a house during voting in a referendum in the village of Pionerskoye, Crimea, Ukraine, March 16, 2014.

A woman holds a Russian flag as she casts her ballot during the referendum on the status of Ukraine's Crimea region at a polling station in Bakhchisaray, Crimea, Ukraine, March 16, 2014.

Crimean Prime Minister Sergei Aksyonov (C) leaves after casting his ballot during voting in a referendum at a polling station in Simferopol, Crimea, Ukraine, March 16, 2014.

A woman holds her dog inside a polling station during the referendum on the status of Ukraine's Crimea region in Sevastopol, Crimea, Ukraine, March 16, 2014.

Pro-Russian demonstrators hold large copies of United Nations documents on the right to self-determination outside the regional parliament building in Simferopol, Crimea, Ukraine, March 16, 2014.

A woman casts her ballot during the referendum on the status of Ukraine's Crimea region at a polling station in Bakhchisaray, Crimea, Ukraine, March 16, 2014.

A woman casts her ballot during voting in a referendum at a polling station in Simferopol, Crimea, Ukraine,  March 16, 2014.

An armed man, believed to be a Russian serviceman, stands guard outside a Ukrainian military base in Perevalnoye,  near Simferopol March 16, 2014.

People shout slogans during a pro-Russian rally at a central square in Donetsk, eastern Ukraine, March 15, 2014.