President-elect Donald J. Trump has promised a radically different approach to foreign policy from that of the Biden administration. In Ukraine, he has pledged to end the war in a day.

But just weeks before he’s set to take office, the war has taken an unexpected turn.

Anton Troianovski, the Moscow bureau chief for The New York Times, discusses the conflict’s dangerous new phase.

Guest: Anton Troianovski, the Moscow bureau chief for The New York Times.

Background reading:

Tit-for-tat moves this week included the use of American-made ballistic missiles to strike inside Russia, and new nuclear threats from Moscow.
As Ukraine fires U.S. missiles, President Vladimir V. Putin of Russia has sent a chilling message.

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