Presidents Donald Trump and Vladimir Putin will hold a high-stakes meeting about the Ukraine war on Friday in Alaska, which the United States bought from Russia more than 150 years ago.

Here is what we know about the meeting between the two leaders, taking place in Alaska - a former Russian territory which only became a US state in 1959. Why are Putin and Trump m

Unlike Putin’s military seizure of about a fifth of Ukraine, Russia’s 19th-century sale of Alaska to the US under Emperor Alexander II was a peaceful transaction. Still, it serves as a reminder that national borders are not set in stone, and land can be a currency for statecraft.