Who blinks first in Ukraine?
Robin Wright writes: For decades, U.S. and Russian leaders have engaged in brinkmanship over territory, influence, and weapons. They’re at it again, this time in Ukraine, with stakes that could shape the balance of power, European unity, the Western alliance, and the success of Joe Biden’s Presidency. On Friday, the national-security adviser, Jake Sullivan, warned that Vladimir Putin could invade even before the Winter Olympics end, on February 20th—and urged all Americans to leave Ukraine immediately. Yet almost frantic diplomacy—as…