Ukrainian state emblem is seen on a gun's holster as soldiers guard naval base in the village of Novoozernoye, some 91 km west of Crimean capital Simferopol, Ukraine, on Monday, March 3, 2014. Ukraine says Russian forces controlling the strategic region of Crimea are demanding that the crew of two Ukrainian warships in Sevastopol's harbor must surrender. (Photo by Ivan Sekretarev/AP Photo)

A man takes pictures of a carnival float depicting Russia's president Vladimir Putin showing his muscles and a bomb reading “Crimea”, prior to the traditional carnival parade in Duesseldorf, western Germany, on Monday, March 3, 2014. The foolish street spectacles in the carnival centers of Duesseldorf, Mainz and Cologne, watched by hundreds of thousands of people, are the highlights in Germany's carnival season on Rosemonday. (Photo by Martin Meissner/AP Photo)

Ukrainian soldiers at the Belbek military base talk friends and family members through the gates of the base entrance on March 3, 2014 in Lubimovka, Ukraine. (Photo by Sean Gallup/Getty Images)

Pro-Russian soldier and others block the Ukrainian naval base in the village of Novoozerne, some 91 km west of Crimean capital Simferopol, Ukraine, on Monday, March 3, 2014. Ukraine says Russian forces controlling the strategic region of Crimea are demanding that the crew of two Ukrainian warships in Sevastopol's harbor must surrender. (Photo by Ivan Sekretarev/AP Photo)

A Ukrainian armored personnel carrier is stationed behind the gate of a military base in the port of Kerch, Ukraine, Monday, March 3, 2014. (Photo by Darko Vojinovic/AP Photo)

An Ukrainian soldier inspects armored vehicles on a military base in Lviv, Ukraine, 03 March 2014. Ukraine put its armed forces on 'full combat readiness' and called up reserves, as Russian military activity increased on both sides of the border. The Russian army reportedly occupied key sites in the autonomous region of Crimea, where a majority of the population is ethnic Russian. Troops surrounded several small military outposts and demanded Ukrainian troops disarm. Some refused, leading to standoffs, but no shots were fired. (Photo by Ivan Boberskyy/EPA)

Pro-Russian soldiers block the Ukrainian naval base in the village of Novoozerne, some 91 km west of Crimean capital Simferopol, Ukraine, on Monday, March 3, 2014. Ukraine says Russian forces controlling the strategic region of Crimea are demanding that the crew of two Ukrainian warships in Sevastopol's harbor must surrender. (Photo by Ivan Sekretarev/AP Photo)

A woman looks through a damaged entrance door as pro-Russian demonstrators hold a rally outside the regional government building in Donetsk, March 3, 2014. Pro-Russian demonstrators occupied the first floor of the regional government building in east Ukraine's city of Donetsk on Monday, the latest in days of rallies that Kiev says are organised by Moscow as a pretext to invade. The 11-storey building has been flying the Russian flag, rather than the Ukrainian flag, for three days, with demonstrators carrying Russian flags staging rallies outside. (Photo by Reuters/Stringer)

A Ukrainian soldier at the Belbek military base talks with family members, including his daughter, through the gates of the base entrance on March 3, 2014 in Lubimovka, Ukraine. (Photo by Sean Gallup/Getty Images)

A pro-Russian activist waves the Russian state, upper, and Russian Navy flags outside an entrance to the General Staff Headquarters of the Ukrainian Navy in Sevastopol, Ukraine, Monday, March 3, 2014. Pro-Russian soldiers seem to further cement their control over the strategic region – that also houses the Russian Black Sea Fleet – by seizing a ferry terminal in the Ukrainian city of Kerch about 20 kilometers (12 miles) by boat to Russia, intensifying fears that Moscow will send even more troops into the peninsula. It comes as the U.S. and European governments are trying to figure out ways to halt and reverse the Russian incursion. (Photo by Andrew Lubimov/AP Photo)

Ukrainian seamen stand guard on the Ukrainian navy ship Slavutich at harbor of Sevastopol, Ukraine, Monday, March 3, 2014. The Ukrainian Defense Ministry said that Russian forces that have overtaken Ukraine's strategic region of Crimea are demanding that the ship's crew surrender. (Photo by Andrew Lubimov/AP Photo)

Military personnel, believed to be Russian servicemen, walk outside the territory of a Ukrainian military unit in the village of Perevalnoye outside Simferopol March 3, 2014. Ukraine mobilised for war on Sunday and Washington threatened to isolate Russia economically after President Vladimir Putin declared he had the right to invade his neighbour in Moscow's biggest confrontation with the West since the Cold War. Russian forces have already bloodlessly seized Crimea, an isolated Black Sea peninsula where Moscow has a naval base. (Photo by David Mdzinarishvili/Reuters)

Ukrainian servicemen and a servicewoman gather on the territory of their military unit located in the village of Lyubimovka near a local airfield, some 80 km (50 miles) southwest of Simferopol, Crimea's capital March 3, 2014. Russia took a financial hit over its military intervention in neighbouring Ukraine, with its markets and currency plunging on Monday as President Vladimir Putin's forces tightened their grip on the Russian-speaking Crimea region. Ukraine said Russia was building up armoured vehicles on its side of a narrow stretch of water closest to Crimea after Putin declared at the weekend he had the right to invade his neighbour to protect Russian interests and citizens. (Photo by Vasily Fedosenko/Reuters)

A Ukrainian serviceman uses binoculars as he stands guard on the territory of a military unit located in the village of Lyubimovka near a local airfield, some 80 km (50 miles) southwest of Simferopol, Crimea's capital March 3, 2014. (Photo by Vasily Fedosenko/Reuters)

Pro-Russian demonstrators hold a rally outside the regional government building in Donetsk, March 3, 2014. Pro-Russian demonstrators occupied the first floor of the regional government building in east Ukraine's city of Donetsk on Monday, the latest in days of rallies that Kiev says are organised by Moscow as a pretext to invade. The 11-storey building has been flying the Russian flag, rather than the Ukrainian flag, for three days, with demonstrators carrying Russian flags staging rallies outside. (Photo by Valeriy Bilokryl/Reuters)

A pro-Russian soldier stands by a billboard with a map of Crimea and bearing the words "Autonomous Republic of Crimea" in the port of Kerch, Ukraine, Monday, March 3, 2014. Pro-Russian troops controlled a ferry terminal on the easternmost tip of Ukraine's Crimea region close to Russia on Monday, intensifying fears that Moscow will send even more troops into the strategic Black Sea region in its tense dispute with its Slavic neighbor. (Photo by Darko Vojinovic/AP Photo)

Riot police stand in line in front of pro-Russian protesters, who try to occupy the Regional administration building in Donetsk, Ukraine, 03 March 2014. According to reports, pro-Russian demonstrators managed to occupy parts of the administration building in the home town of toppled Ukrainian president Viktor Yanukovych. Meanwhile, the Russian army reportedly occupied key sites in the autonomous region of Crimea, where a majority of the population is ethnic Russian. Troops surrounded several small military outposts and demanded Ukrainian troops disarm. Some refused, leading to standoffs, but no shots were fired. (Photo by EPA/Photomig)

Pro Russian soldiers wait outside a Ukrainian military base in the port of Kerch, Ukraine, Monday, March 3, 2014. Pro-Russian troops controlled a ferry terminal on the easternmost tip of Ukraine's Crimea region close to Russia on Monday, intensifying fears that Moscow will send even more troops into the strategic Black Sea region in its tense dispute with its Slavic neighbor. The seizure of the terminal in the Ukrainian city of Kerch about 20 kilometers (12 miles) by boat to Russia, comes as the U.S. and European governments try to figure out ways to halt and reverse the Russian incursion. (Photo by Darko Vojinovic/AP Photo)

Russian solders walk as a local resident waves with Russian flag outside of a Ukrainian military base in the village of Perevalne, outside of Simferopol, Ukraine, on Sunday, March 2, 2014. Hundreds of armed men in trucks and armored vehicles surrounded the Ukrainian military base Sunday in Crimea, blocking its soldiers from leaving. (Photo by Ivan Sekretarev/AP Photo)

Ukrainian soldiers stand guard at the gate of a military base in the port of Kerch, Ukraine, Monday, March 3, 2014. Pro-Russian troops controlled a ferry terminal on the easternmost tip of Ukraine's Crimea region close to Russia on Monday, intensifying fears that Moscow will send even more troops into the strategic Black Sea region in its tense dispute with its Slavic neighbor. (Photo by Darko Vojinovic/AP Photo)

A man protests the situation in Ukraine next to a replica of the Statue of Liberty in Mason City, Iowa, Monday, March 3, 2014. The man who refused to be identified wanted to join other protesters around the world. (Photo by Arian Schuessler/AP Photo/The Globe Gazette)

Ukrainians living in Italy shout slogans and hold a photo of what they say are victims of the unrest in Kiev, as they protest outside the Russian embassy, in Rome, Monday, March 3, 2014. Demonstrators condemned Russian military actions in Ukraine. (Photo by Andrew Medichini/AP Photo)

Russian President Vladimir Putin, center, and Defense Minister Sergei Shoigu, left, and the commander of the Western Military District Anatoly Sidorov, right, walk upon arrival to watch military exercise near St.Petersburg, Russia, Monday, March 3, 2014. (Photo by Mikhail Klimentyev/AP Photo/RIA-Novosti/Presidential Press Service)

Oleg, a Ukrainian soldier at the Belbek military base, kisses his girlfriend Svetlana through the gates of the base entrance on March 3, 2014 in Lubimovka, Ukraine. Tensions at the base, where between 100 and 200 Ukrainian soldiers are stationed, are high as a 4pm deadline reportedly given by Russian troops for the Ukrainians to surrender passed and locals feared the Russians might attack tonight. Heavily-armed soldiers who are not displaying identifying insignia but are widely believed to be Russians have blockaded several Ukrainian military bases across Crimea. (Photo by Sean Gallup/Getty Images)

Russian President Vladimir Putin, center, and Defense Minister Sergei Shoigu, left, and the Chief of Gen. Ivan Buvaltsev, right, watch a military exercise near St.Petersburg, Russia, Monday, March 3, 2014. Putin has sought and quickly got the Russian parliament's permission to use the Russian military in Ukraine. (Photo by Mikhail Klimentyev/AP Photo/RIA-Novosti/Presidential Press Service)

A Ukrainian national flag flies on the board of Ukrainian navy ship Slavutich at harbor of Sevastopol, Ukraine, Monday, March 3, 2014. The Ukrainian Defense Ministry said that Russian forces that have overtaken Ukraine's strategic region of Crimea are demanding that the ship's crew surrender. (Photo by Andrew Lubimov/AP Photo)

A woman cooks food for anti-Yanukovych protesters at Kiev's Independence Square, Ukraine, Monday, March 3, 2014. Russia pressed hard Monday for Ukrainian politicians to return to the February 21 agreement that promised to create a new unity government which would rule until an early election no later than December. But the proposal seemed to be a non-starter as diplomats met in Brussels, Kiev and Geneva and warnings about the dangers of Russia's military actions were issued from a host of European capitals. (Photo by Emilio Morenatti/AP Photo)

People stand on board the Ukrainian navy corvette Ternopil at harbor of Sevastopol, Ukraine, Monday, March 3, 2014. (Photo by Andrew Lubimov/AP Photo)

Military personnel, believed to be Russian servicemen, stand guard outside the territory of a Ukrainian military unit in the village of Perevalnoye outside Simferopol March 3, 2014. Ukraine mobilised for war on Sunday and Washington threatened to isolate Russia economically after President Vladimir Putin declared he had the right to invade his neighbour in Moscow's biggest confrontation with the West since the Cold War. Russian forces have already bloodlessly seized Crimea, an isolated Black Sea peninsula where Moscow has a naval base. (Photo by David Mdzinarishvili/Reuters)

An anti-Yanukovych protester salutes as the Ukrainian national anthem is played at Kiev's Independence Square, Ukraine, Monday, March 3, 2014. The U.S. and its allies are weighing sanctions on Moscow and whether to bolster defenses in Europe in response to Russia's military advances on Ukraine. (Photo by Emilio Morenatti/AP Photo)