Not a shot has been fired... so far.
Russia has invaded the Crimean peninsula of Ukraine and taken over its civilian and military infrastructure. Not a shot has been fired so far, but Russia is using its superior force to intimidate Ukrainian troops in an attempt to get them to surrender.
Russia claims it wants to stabilise the situation on the peninsula, which has a large Russian population, but Ukraine's new government regards the move as an occupation of its sovereign territory.
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