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.

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. Russian influence still endures in parts of the remote state on the northwest edge of the North American continent,

Trump will meet Putin in Alaska to negotiate a ceasefire in Ukraine. But Zelensky has objected to being left out.