North Korea

CNN analyst Peter Bergen reflects on Trump's soured relationships with Generals Mattis, McMaster and Kelly. "He's gotten rid of the most competent people he had in his circle," Bergen says.

Journalist Anna Fifield visited North Korea and interviewed many of its citizens — including members of Kim Jong Un's family — for her new book about the country and its leader.

New Yorker writer Dexter Filkins says President Trump's current national security adviser is a hawk who sees America as "a colossus operating anywhere it wants."

New York Times Magazine writer Mattathias Schwartz says that when Trump's tweets take our allies by surprise, it's the secretary of state's job to "calm people down."

New Yorker journalist Evan Osnos says Chinese leaders think of President Trump as a "paper tiger" who makes promises he can't deliver and who can be "managed" with flattery.

New Yorker writer Dexter Filkins says Sec. of State Rex Tillerson is a diplomat in an administration that doesn't value diplomacy: "Rex is a sober, steady guy, and the president is anything but that."

New Yorker writer Evan Osnos visited North Korea in August to understand what they really mean when they talk about nuclear war. He found that nuclear weapons are an essential part of their society.

New York Times reporter David Sanger talks about North Korea's nuclear program and warns that the regime, which has been "fodder for late night comedians for many many years," is no joke.

After journalists Laura Ling and Euna Lee were detained in North Korea in 2009, Laura's sister, fellow journalist Lisa Ling, worked tirelessly to bring them home. In a conversation with contributor Dave Davies, the sisters detail the incident that ended with former President Bill Clinton bringing them home.

Journalist Mike Chinoy, author of Meltdown: The Inside Story of the North Korean Nuclear Crisis, discusses North Korea's development of nuclear weapons and America's attempts to stop their program.

On February 26, conductor Lorin Maazel led the New York Philharmonic in an unprecedented concert in Pyongyang, North Korea. It was the first time a major American orchestra performed in the communist country. The concert was broadcast nationwide.

Graham Allison is an expert on nuclear weapons and national security. In his new book, Nuclear Terrorism: The Ultimate Preventable Catastrophe, he argues that avoiding a catastrophic nuclear event needs to be a higher priority for the U.S. government.

Pritchard is a retired U.S Army colonel and the former point man on North Korea for Colin Powell. He worked on North Korea issues in both the Clinton and Bush administrations. Pritchard resigned from the Bush administration in August 2003 and has criticized the administration for lacking an effective strategy. This week the United States is participating in six-party talks in an attempt to freeze North Korea's nuclear programs and restart inspections.

Milhollin is director the Wisconsin Project on Nuclear Arms Control, a non-profit research group in Washington, D.C. that has been tracking the spread of weapons of mass destruction since 1986. He will talk about who has nuclear weapons, who is developing them, who has intelligence about them and who poses the biggest threat. Milhollin is also professor Emeritus of the University of Wisconsin Law School. His op-ed pieces about nuclear weapons have appeared in many publications, including The New York Times.

Gordon is a sports journalist and Bonner is a specialist on North Korea. They collaborated on the documentary The Game of Their Lives about the most shocking upset in World Cup History: It was July 19, 1966, and the scrappy underdog North Korean team beat the favored Italians, whose players were some of the finest in the world. Later the Korean team lost in the quarterfinals to Portugal. Then the players returned home and disappeared from view.

Nicholas Kristof, editorial columnist for The New York Times, discusses the North Korea crisis. He has covered North and South Korea off and on since 1986. He's served as the Times bureau chief in Hong Kong, Beijing and Tokyo. He was co-recipient of the Pulitzer Prize for international reporting for his coverage of the Chinese crackdown on protesters at Tiananmen Square. In a column which appeared in the Times on February 4, 2003, he wrote, "The North Korean nuclear crisis is far more perilous than many people realize.

Selig Harrison spent four years as Washington Post Bureau chief in Japan, and is now Senior Associate at the Carnegie Endowment for International Peace. He argues that the nuclear threat posed by North Korea is overstated -- that they are using the "nuclear card to get diplomatic recognition and economic help." Negotiations offer a chance for nuclear disarmament and dismantling throughout the area.

Syndicated columnist and writer for Time magazine, Charles Krauthammer. He favors an economic blockade of North Korea to force its government to stop any development of nuclear weapons. Of President Clinton's policy on North Korea Krauthammer. has said, "To allow North Korea to flout the nonproliferation treaty and become bomb supplier to every outlaw state on the planet would be Clinton's most humiliating and most dangerous foreign policy retreat yet." (Wash Post 3/25/94).

Former special assistant for National Security Affairs under Presidents Kennedy and Johnson, McGeorge Bundy. He's co-authored a new book with Admiral William Crowe, "Reducing Nuclear Danger," XXXX. Terry will talk with Bundy about the threat that still exists of nuclear disaster from such countries as Iraq and North Korea.