President Obama, seen shaking hands with Raul Castro at the Summit of the Americas in Panama, engaged in the first substantive face-to-face U.S.-Cuba talks in more than 50 years. Scott Horsley/NPR hide caption

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Sen. Bob Corker, R-Tenn., chairman of the Senate Foreign Relations Committee, will shepherd bills on Congress' reaction to the Iran framework deal struck by President Obama. J. Scott Applewhite/AP hide caption

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In an interview with NPR's Morning Edition host Steve Inskeep, President Obama said Wisconsin Gov. Scott Walker is advocating a "foolish approach" to Iran and that he should "bone up on foreign policy." Mito Habe-Evans/NPR hide caption

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"Let Diplomacy Work" was spelled out near the Capitol by liberal, anti-war group MoveOn.org earlier this week. Larry French/Getty Images hide caption

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Congress tries every year to plug a loophole that would otherwise result in a 21 percent cut in Medicare doctors' pay. But it doesn't exactly always tighten its belt in the process. Key Wilde/Getty Images hide caption

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"An occupation that has lasted for almost 50 years must end," White House Chief of Staff Denis McDonough told the annual J Street conference Brendan Smialowski/AFP/Getty Images hide caption

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President Obama with Israeli Prime Minister Benjamin Netanyahu at the White House in 2013. The two have never had a warm and fuzzy relationship. Charles Dharapak/AP hide caption

itoggle caption Charles Dharapak/AP

Chicago Mayor Rahm Emanuel failed to capture a majority of the vote last month, forcing him into a runoff. It's highlighting a divide among Democrats playing out nationally. Charles Rex Arbogast/AP hide caption

itoggle caption Charles Rex Arbogast/AP

Polls show changing American opinion on marijuana, and it's having an effect on politics. Leon Neal/AFP/Getty Images hide caption

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Tom Cotton, R-Ark., the freshman senator and Harvard graduate senator with a record of tough talk on foreign policy. Carolyn Kaster/AP hide caption

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Secretary of State John Kerry told a House panel Wednesday that Israeli Prime Minister Benjamin Netanyahu's judgment on talks with Iran "may not be correct." Carolyn Kaster/AP hide caption

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Barack Obama hands a gift from a supporter to his assistant Reggie Love during his 2008 campaign for presidency. Emmanuel Dunand/AFP/Getty Images hide caption

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