Washington Week (video) | PBS

In Syria, a senior ISIS leader is dead and his wife was taken into U.S. military custody. What’s next for her? Nancy Youssef of The Daily Beast reports. Plus, a bomb threat forces press members to evacuate the White House Briefing Room.

As the 2016 presidential field has expanded to 14 candidates (with more to announce soon), Gwen discusses the Democratic candidates who could challenge Hillary Clinton for the nomination. Is Bernie Sanders up to the challenge? And what's the possibility of a independent candidate running and winning?

After the release of an image of Caitlyn Jenner on the cover of Vanity Fair, Gwen responded with her thoughts on Twitter. Gwen further expresses her thoughts to Samantha, who says she was "VERY disappointed" in Gwen's reaction to the magazine cover photo featuring Jenner in a swimsuit.

The House is set to vote to grant fast-track trade authority to President Obama on Friday, but Carol asks Gwen why the president is pushing so hard for TPP when other Democrats like Massachusetts Sen. Elizabeth Warren are against the agreement. Gwen's answer: They have different jobs and different agendas.

The Supreme Court is set to finish its term this month, but there are several big cases still to be decided including rulings on same-sex marriage, Obamacare and the death penalty. But who is the justice everyone is looking to as the key vote? Justice Anthony Kennedy has developed a reputation as "the decider" of big Supreme Court cases on divisive issues from gay rights to race.

Congress passed the USA Freedom Act which overhauls the way U.S. intelligence agencies can monitor phone records. Meanwhile, nearly 4 million federal government had personal information stolen in a widespread attack U.S. officials are blaming on China. On the 2016 campaign trail, four new candidates threw their hats in the ring this week.

Despite family ties, Republican aren’t quick to jump on the Jeb Bush bandwagon just yet. The former Florida governor is expected to officially launch his presidential campaign this month, but several key Bush family supporters aren't sold yet. But at the White House, a new guest is already moving in, but it’s not who you would expect.

As Congress debates portions of the PATRIOT Act that expired this week, we look back in the Washington Week Vault to the day President George W. Bush signed the bill into law in 2001. The nation, just weeks after the September 11 attacks, was looking for information to track down the terrorists responsible for the attack.

This week, Islamic State militants released a video showing the barbaric execution of a Jordanian pilot held captive since December. As Jordan stepped up its fight against ISIS, the terrorist group reported that a Jordanian airstrike killed an American aid worker being held hostage.

On the Webcast Extra, Doyle McManus of the Los Angeles Times details the coup in Yemen and the struggle the US government may have trying to work with the Houthi rebel group that is now in power.

On the Webcast Extra, Dan Balz of the Washington Post and Jeff Zeleny of ABC News report on Hillary Clinton's impending 2016 presidential campaign. When will she officially jump in? And what is she waiting for? Plus, Nancy Youssef of The Daily Beast reports on the expansion of ISIS to North Africa as the U.S. predicts a 3-5 year battle to defeat the militant group.

Republican presidential nominee Mitt Romney announced that he will not seek the nomination again in 2016. What does this mean for the rest of the 2016 field? Who benefits? Plus, the Republican-controlled Congress re-litigates hot-button issues including Benghazi, Obamacare, and Eric Holder's legacy. Overseas, ISIS continues to hold two hostages and is demanding the release of a Jordanian prisoner.

President Obama's State of the Union was met with pushback from the Republican-controlled Congress, but where is there room for compromise on the president's 2015 legislative agenda? Alexis Simendinger and Ed O'Keefe report on the president's proposals for community college and trade as well as the Republican opposition.

On the Webcast Extra, Alexis Simendinger reports on President Obama's round of interviews with YouTube personalities and the administration's digital approach to get the State of the Union message out. While the viewership of the speech itself was down, the White House hopes to further their reach. But as Simendinger says, engagement is not necessarily persuasion.

Reverberations from the terror attack in Paris continued this week as dozens of arrests have been made, and Europe remains on heightened alert. Plus, nuclear talks with Iran continue, and President Obama is threatening to veto legislation imposing more sanctions on Iran saying they would derail progress. The Supreme Court will decide the constitutionality of same-sex marriage.