Before President Donald Trump sits down with Russian President Vladimir Putin for a highly-anticipated summit in Alaska to discuss Moscow's war on Ukraine, experts emphasize the historical significance of this meeting location, specifically how the United States purchased the land from Russia back in 1867.

Russia says it invaded Ukraine to halt Kyiv's ambitions to join NATO, the U.S.-led defensive alliance, which it saw as a major security threat. It also accuses Kyiv of persecuting ethnic Russians and their culture in Ukraine.