Well, most of the Crimea citizens are Russians (58.32%) while Ukrainians only 24.32% (Wikipedia). Thus, if most of the Crimeans are welcome to the Russian Soldiers, then why US government is so upset?
Is US government never invade countries such as Afghanistan, Iraq, Panama, Vietnam, Korea, etc and kill millions of people? Just look into the mirror!
If most of the Crimeans who are Russians are supporting Russian Soldiers, then Ukraine will not be able to defeat Russia in Crimea.
US government is very angry because of Russia's invasion. Look who's talking. What about US invasions in Afghanistan, Iraq, Vietnam, Haiti, Korea, Cambodia, Grenada, Mexico, Panama, etc?
US soldiers have killed million people. But until now, there is no a single fire have been shot, just like Putin says.
Russia 'demands surrender' of Ukraine's Crimea forcesThe Kremlin says its troops are needed to protect civilians in the region, many of whom are Russian speakers and have welcomed Russia's intervention.
Moscow, which does not recognise the new government, says people in Crimea have come under threat from "ultra-nationalists" since the revolution in Kiev.
CrimeaThe Autonomous Republic of Crimea is an autonomous parliamentary republic within Ukraine and is governed by the Constitution of Crimea in accordance with the laws of Ukraine. Crimea's area is 26,200 square kilometres (10,100 sq mi) and its population is 2,352,385 people (2007 estimate).
Ethnic groups (2001)
12.10% Crimean Tatars
Why Crimea is so dangerous
Crimea is a centre of pro-Russian sentiment, which can spill into separatism. The region - a peninsula on Ukraine's Black Sea coast - has 2.3 million people, most of whom identify themselves as ethnic Russians and speak Russian.
The region voted heavily for Viktor Yanukovych in the 2010 presidential election, and many people there believe he is the victim of a coup - leading to attempts by separatists in Crimea's parliament to push for a vote on whether it should leave Ukraine.
Russian takeover of Crimea will not descend into war, says Vladimir Putin"We will not go to war with the Ukrainian people. If we do take military action, it will only be for the protection of the Ukrainian people,"said Putin, adding that there was no scenario in which Russian troops would fire "on women and children".
The Russian president continued: "Ukraine is not only our closest neighbour it is our fraternal neighbour. Our armed forces are brothers in arms, friends. They know each other personally. I'm sure Ukrainian and Russian military will not be on different sides of the barricades but on the same side. Unity is happening now in the Ukraine, where not a single shot has been fired, except in occasional scuffles."