Ukraine's President Petro Poroshenko called an emergency session of his war cabinet and has asked parliament to impose martial law on the country for 60 days after Russia opened fire on Ukrainian ships, capturing three vessels and wounding three Ukrainian sailors.  Russia accused Ukraine of illegally entering an area of the Black Sea and deliberately provoking a conflict.  A 2003 treaty designates the Kerch Strait and Sea of Azov as shared territorial waters but Russia has been asserting greater control over the area since 2015 after it annexed Crimea.  Mariupol is close to the region of eastern Ukraine controlled by Russian-backed separatists in a conflict that has caused at least 10,000 deaths since 2014.
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Jake Morphonios explains how the CIA, with the aid of George Soros, overthrew the pro-Russian government of Ukraine in 2014 and replaced it with a puppet government.  He says that Crimea, located in a strategic area, voted overwhelmingly to be annexed by Russia.