Former Florida Gov. Jeb Bush 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. A hawk has taken up residence on the White House grounds. And officials in Boston deal with a new terror threat.

The Pentagon recently ended its suicide prevention program, Vets4Warriors. Yochi Dreazen reports on why the program, which has assisted hundreds of thousands of veterans, is at risk. Dan Balz explains the role super PACs will play in the primary elections. Plus, why no one should underestimate certain 2016 "underdogs" and a report on the state of the infrastructure bill in Congress.

Senate leaders compromised on a deal to fast-track President Barack Obama’s trade initiative after Senate Democrats rejected the president’s original proposal. Manu Raju of POLITICO explains how the compromise came together.

Two of the Republican candidates eyeing the White House in 2016 are from Florida, and CNN’s Jeff Zeleny details the competitive friendship between Jeb Bush and Marco Rubio.

After weeks of marathon talks in Switzerland, world leaders reached a preliminary agreement on the future shape of Iran's nuclear program. Indira Lakshmanan of Bloomberg News just returned from the talks and debriefs on the terms of the deal that include limitations on Iran's nuclear capabilities and a lifting of economic sanctions.

Several potential Republican presidential candidates travelled to New Hampshire this week. Jeff Zeleny of CNN explains the impact of campaigning in early primary states for these hopefuls. The Washington Post’s Carol Leonnig breaks down the corruption investigation of New Jersey Sen. Bob Menendez and what is, or isn’t, allowed when people in power want to "help a friend."

This Week, ISIS expanded its reach to North Africa where 21 Egyptian Christians were beheaded. At the same time, the White House held a violent extremism summit where President Obama rejected calling the group “Islamic.” The Daily Beast's Nancy Youssef and POLITICO's Michael Crowley report on the group's expansion and why the words used to describe ISIS fighters really matters.

President Obama has formally asked Congress for war powers to fight Islamic State militants, but his request is being met with resistance. Republicans think Obama's three-year proposal is too restrictive with limits on his power, while Democrats want a ban on ground troops. And in Ukraine, a ceasefire deal negotiated by European leaders takes effect this weekend.

On the Webcast Extra, jury selection began in the trial of accused Boston Marathon bomber Dzhokhar Tsarnaev. Over 1200 potential jurors have been summoned in a process that could take three weeks in the death penalty case. Plus, former CIA Director David Petraeus could face felony charges for giving classified information to his mistress.

As the New Year kicks off, we look at the new political landscape in Washington as a new Republican-controlled Congress takes over. As President Obama begins his final two years in office, will he find common ground with Republicans? Plus, the Supreme Court is set to decide two major cases this year involving the Affordable Care Act and same-sex marriage.