It has been three weeks since the war in Ukraine began. The fighting grinds on and there is no clear end in sight. But what are the potential paths forward in the coming days and weeks?

On Wednesday, President Volodymyr Zelensky, in an address to Congress, proposed one such path, though it is an incredibly unlikely one: a no-fly zone over Ukraine.

Elsewhere, Times reporting has suggested four other potential scenarios — a diplomatic end to the conflict; protracted monthslong fighting; China coming to Russia’s rescue; and President Vladimir V. Putin expanding the conflict beyond Ukraine’s borders.

We explore these scenarios and consider which of them is most likely to occur.

Guest: David E. Sanger, a White House and national security correspondent for The New York Times.

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Background reading: 

• The United States accurately predicted the start of the war in Ukraine, sounding the alarm that an invasion was imminent despite Moscow’s denials and Europe’s skepticism. Predicting how it might end is proving far more difficult.
• In a speech to Congress, President Volodymyr Zelensky of Ukraine called for a no-fly zone and more weapons to combat Russia’s assault and implored President Biden to be “the leader of peace.”

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