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“Multilateral diplomacy has regained a central position, with emphasis on the role that the United Nations and other international institutions can play,” the committee said. “Dialogue and negotiations are preferred as instruments for resolving even the most difficult international conflicts.”

Critics of the president see significant political risk for Mr. Obama.

“I think in this speech, because even the White House said they thought they had been punked, I think he realizes he will need to strive to be humble,” said Dana Perino, who served as press secretary under President George W. Bush.

Liz Cheney, a daughter of former Vice President Dick Cheney, told Fox News that she thought the speech would “add to the farce” that Mr. Obama had received the award.

Kevin Madden, a Republican political consultant, said he expects that the president will focus his speech on the sacrifices that real Americans have made in trying to make the world more peaceful.

Mr. Obama has little choice but to highlight the work of others, Mr. Madden said, because “he really hasn’t done anything himself in terms of a major peace initiative.”

“He should frame the award as a shared achievement and a shared responsibility,” Mr. Madden said, “rather than it being all about him.”