Washington Week (video) | PBS

The FBI is investigating the mass shooting in San Bernarndino, California, that left 14 people dead as "an act of terror" after one of the suspects declared her allegiance to ISIS in an online post. NBC News' Pete Williams updates us on where the investigation stands. Plus, the shooting has revived political conversations about enhancing gun laws in America.

As you dig in to your Thanksgiving leftover, we dive deep into the American mood. Concerns about terrorism, distrust of political leaders and a spirited debate about who's best to lead our country are topics of conversation around the country. Gwen Ifill discusses this all with The New York Times' Peter Baker, The Washington Post's Dan Balz and BBC's Kim Ghattas.

On the Webcast Extra, Peter Baker explains who is behind the 65-member coalition fighting ISIS. On the 2016 campaign trail, Hillary Clinton's campaign team has determined there is "no strategic advantage" to distance Clinton from Obama. And our annual Washington Week Winter Reading List is out! Our panelists share their must-read books to give you some inspiration for holiday giving.

On the Webcast Extra, Israeli spy Jonathan Pollard has been released after 30 years in prison. Real Clear Politics Alexis Simendinger explains the conditions of his release. Pete Williams of NBC News discusses the one year anniversary of President Obama's immigration policy and its potential fate at the Supreme Court.

One week after the terror attacks in Paris left 130 people dead, the United States and global community have intensified the resolve to defeat ISIS and prevent future attacks. In state houses across the country and in the U.S. House of Representatives, the conversation has shifted to refugee policy and preventing all Syrian refugees from entering the country until security measures can increase.

Terrorists struck multiple locations across Paris leaving over 100 people dead in "highly coordinated" attacks including multiple shootings and a bombing at a soccer stadium. President Obama pledged U.S. support to track down the perpetrators and called the terrorist acts an "attack on all of humanity." The New York Times' David Sanger reports on the reverberations beyond the French capital.

On the Webcast Extra, David Sanger reports on the search for the Paris attackers that has led to border closings and increased military response in France as authorities try to determine if this was a centralized plan or a local group. In Election 2016, big money Democratic donors have yet to open their wallets to leading candidates Hillary Clinton and Bernie Sanders.

On this Webcast Extra, Eamon Javers of CNBC reports on how Wall Street is reacting to the jobs report and speculation the Federal Reserve will hike interest rates in December. Coral Davenport of The New York Times discusses upcoming climate talks in Paris and how these talks may succeed where previous talks failed because the U.S. is bringing new EPA regulations to the table.

After seven years of debate, the Obama administration rejected the proposed Keystone XL pipeline. Obama said the project, which would extend from Canada to Texas, served "no national interest." The New York Times' Coral Davenport explains what's behind the decision.

Ohio Republican John Boehner served nearly five years as House Speaker before passing the torch to Paul Ryan, and he retires this week after 25 years in Congress. Doyle McManus of The Los Angeles Times says that his career as Speaker may not have been what he wanted it to be and that he may have been better suited to serve as Speaker 20 years ago.

Republican presidential candidates debated economic issues in their third matchup of the 2016 election. Jeb Bush and Marco Rubio sparred over Rubio's missed Senate votes. Jeb Bush’s performance seems to have worried some of his donors and Jeanne Cummings of The Wall Street Journal says that Bush must improve for the next debate or his campaign doesn’t stand a chance in the upcoming election.

Lincoln Chafee ended his campaign for the Democratic presidential nomination, and The Atlantic's Molly Ball discusses the short-lived campaign of Chafee, the "most pointless" candidate. Plus, Politico’s Josh Gerstein explains how if Hillary Clinton’s email scandal becomes an actual FBI criminal investigation it could quickly eclipse her Benghazi committee hearing.

Hillary Clinton faced another congressional committee this week concerning the 2012 Benghazi attacks that killed four Americans. Despite the 11 hour hearing and sometimes pointed exchanges between committee members.

Republicans are still searching for their next House Speaker, and the man who everyone wants, Rep. Paul Ryan, is said to still be reticent about assuming the leadership role which may cause potential no-name politicians to start throwing their hat into the ring according to NBC News’ Chuck Todd.

The five Democratic White House hopefuls squared off in their Party's first debate of the 2016 Election with issues ranging from gun control, foreign policy and Hillary Clinton’s State Department emails. Dan Balz of The Washington Post says that despite Clinton’s strong showing at the debate, Joe Biden continues to weigh a 2016 run.