What kind of foreign policy is possible for the United States after four years of isolationism under President Trump?

Antony Blinken, President-elect Joe Biden’s pick for secretary of state, has an interventionist streak, but some vestiges of Trump-era foreign policy will be hard to upend.

If confirmed, Mr. Blinken faces the challenge of making the case at home that taking a fuller role abroad is important, while persuading international allies that the United States can be counted on.

What course is he likely to steer through that narrow channel?

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

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Background reading:

• Mr. Blinken’s extensive foreign policy credentials are expected to help calm American diplomats and global leaders after four years of the Trump administration’s ricocheting strategies and nationalist swaggering.
• European allies of the United States have welcomed a president who doesn’t see them as rivals. But with the possibility of a Republican-controlled Senate, they are also wary.
• Mr. Biden wants to reactivate the 2015 Iran nuclear deal, but the killing of the top nuclear scientist in the Middle Eastern nation, which Tehran has blamed on Israel, could complicate that aim.

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