President Donald Trump and the North Korean leader are set to meet at an undetermined date and location, but the high-stakes summit has risks. The panelists discussed the implications of the potential meeting, along with the backlash the president’s new tariffs are earning.

The table discussed Rachel Brand's departure, the latest updates in the Russia probe, and the impact of former Republican National Committee finance chair Steve Wynn stepping down from his casino empire.

It may be a new year, but many of the old problems remain the same. Susan Glasser of POLITICO and Evan Osnos of The New Yorker discuss the foreign policy challenges facing the Trump administration in 2018. Watch the full #WashWeek Extra for more discussion about the GOP's 2018 legislative agenda.

Tensions escalated between the United States and North Korea this week after U.S. intelligence agencies assessed North Korea has successfully miniaturized a nuclear warhead that could fit on a missile capable of reaching Chicago. The panelists discussed the options being considered to de-escalate the standoff.

President Trump met with Russian President Vladimir Putin during the G20 Summit in Germany. Trump pressed Putin about Russia's role in meddling in the U.S. presidential election which Putin denied doing. How is Trump reshaping American foreign policy six months after taking office? And how does the global community view the new president?

Less than 100 days in office, President Trump is facing one the most significant test of his leadership so far. Trump ordered a missile strike against targets in Syria in response to a chemical attack on civilians. It’s the latest in a series of national security challenges this week including missile tests in North Korea. How is the new president being tested?

President Obama announced new executive actions to curb gun violence including expanding background checks and mental health screenings. North Korea claimed this week to have successfully tested a hydrogen bomb. On the 2016 campaign trail, Republican frontrunner Donald Trump is questioning his GOP rival Ted Cruz's eligibility to run because he was born in Canada.

On the Webcast Extra, will newly announced sanctions on North Korea deter change the behavior of Kim Jong Un's regime or just send a message? Domestically, 34 years after the assassination attempt on President Reagan, shooter John Hinckley will not face charges for the murder of Press Secretary Jim Brady.

In 2014, ISIS, Boko Haram and Crimea became household names and Ebola re-entered the scene as a medical crisis. Gwen Ifill speaks with Indira Lakshmanan of Bloomberg News, David Ignatius of the Washington Post and David Miliband of the International Rescue Committee about this past year’s biggest global challenges, and what conflicts to expect in the coming year.

Some cyber security experts are skeptical of assertions that North Korea is responsible for a massive hack on Sony. To examine the debate, Gwen Ifill gets assessment from Dmitri Alperovitch of CrowdStrike and Marc Rogers of CloudFlare.