| On GPS at 10 a.m. and 1 p.m. ET on CNN: First, Fareed gives his Take on the populist-nationalist movements that seem to be sweeping the world. "While the forces of populism continue to surge in some places, the story of the past few months has mostly been one of pushback," Fareed says. "There are many people in every country who oppose the politics of anger and identity. They are also strong. They need to run fast but not run scared." A tectonic shift in US military policy took place this week. What will be the impact of America's withdrawal from Syria and drawdown in Afghanistan? What is the significance of the resignation of Defense Secretary James Mattis? Fareed discusses with Richard Haass, president of the Council on Foreign Relations.
Behind the partial government shutdown lies a fundamental policy disagreement: President Trump believes it is absolutely necessary that the US build a wall on the southern border, while congressional Democrats believe the idea is utterly foolish. In this week's What in the World segment, Fareed examines the track record of border walls in other countries to determine whether the idea would work well for the US. Many people are hoping 2019 will be a better year for the world. But is it possible 2018 was actually the best year ever? Steven Pinker, psychology professor at Harvard, debates Niall Ferguson, senior fellow at Stanford's Hoover Institution. Finally, a clarion call on climate change from 15-year-old Swedish activist Greta Thunberg. She says it's time for the adults to grow up and take decisive action before it's too late. | 
