White House national-security adviser Jake Sullivan said Americans should leave Ukraine immediately amid the threat of an imminent Russian invasion, warning that the U.S. military will not be able to evacuate citizens in the event of a war. “We encourage all American citizens who remain in Ukraine to depart immediately,” …

What War in Ukraine Would Look Like—and How America Should Respond Despite a flurry of meetings in recent weeks, the United States, NATO, Ukraine, and Russia have not moved any closer to a diplomatic solution or a reduction of tensions on the Ukrainian-Russian border. Although Russia has not completely abandoned …

Americans in Ukraine shouldn’t count on 82nd Airborne paratroopers in nearby Poland to come to the rescue if a Russian invasion occurs. That was the message Thursday from President Joe Biden, who ruled out evacuation missions should the Kremlin’s threatening military buildup near Ukraine turn into a new incursion. “That’s …