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Former GOP Congresswoman Liz Cheney tells CNN's Jake Tapper that Donald Trump's threat not to defend some NATO countries "shows a complete lack of understanding of America's role in the world."

Emergency officials in California have issued an evacuation warning as millions in the state brace for another round of flooding in regions that are already saturated. CNN's Karen Maginnis reports.

Can a party replace its presidential nominee after the primaries? "From 1831 to 1968 both political parties nominated candidates in conventions," says Elaine Kamarck of the Brookings Institution. "And while it may take a little while for the muscle memory to come back...there is a process, there is a history to that process, and I think both political parties could, in fact nominate a replacement if they needed to."

Texas Gov. Greg Abbott announced plans to build an 80-acre base to house up to 1,800 Texas National Guard members near Eagle Pass -- the border city at the center of a contentious feud between the state and Biden administration over federal immigration policy. CNN's Camila Bernal reports.

Emergency officials in California have issued an evacuation warning as millions in the state brace for another round of flooding in regions that are already saturated. CNN's Karen McGinnis reports.

CNN's Kim Brunhuber speaks with Noah Giansiracusa, a math sciences professor at Bentley University, about how AI-generated misinformation threatens election integrity, and what can be done about it.

CNN's Kim Brunhuber speaks with Elliott Gotkine about U.S. opposition to a new Gaza ceasefire resolution at the U.N. Security Council if it comes to a vote.

After being ordered to pay hundreds of millions of dollars by a New York judge, former U.S. President Donald Trump is ranting against the U.S. legal system. CNN's Senior Political Analyst Ron Brownstein says Trump's behavior mirrors autocratic leaders.

U.S. Republican presidential candidate Nikki Haley is slamming her rival Donald Trump for his silence, following the death of Putin critic Alexey Navalny. Haley told supporters that Trump, "emboldened Putin."

CNN's Sebastian Shukla joins Anna Coren from Germany to discuss proposed aid for Ukraine at the Munich Security Conference, as Ukrainian forces suffer loses on the ground.

U.S. Republican Presidential Candidate Donald Trump hit the campaign trail in Michigan, just one day after his latest legal and financial setbacks. CNN's Steve Contorno reports from Michigan.

Japan successfully launches its flagship H3 rocket following a failed attempt last year. Manisha Tank reports on what this means for the country's space program.

An early "Star Wars" script belonging to Harrison Ford was auctioned off for more than $13,000. The script and personal notes were found at a London flat Ford rented while filming the movie.

At least 75 people have been rescued after being trapped more than a kilometer offshore on a 50-meter-wide ice floe. CNN's Michael Holmes reports.

Russia is trying to develop a nuclear space weapon that would destroy satellites by creating a massive energy wave when detonated, according to sources familiar with U.S. intelligence. CNN's Katie Bo Lillis reports.

Israeli Prime Minister Netanyahu says there is "a lot of space" north of Rafah for Palestinians to flee if Israel pushes forward with military operations there. But most Palestinians in Rafah say they came from areas that were evacuated in the north. CNN's Nic Robertson reports.

Hundreds of people in Russia have been detained as they hold vigils and rallies for Alexey Navalny, according to a human rights group. This comes as Navalny's mother traveled to the remote area in the far north where Russia says he died at a penal colony. CNN's Nick Paton Walsh reports.

Hundreds of people in Russia have been detained according to a human rights group as they attend vigils and rallies for Alexey Navalny. This comes as the whereabouts of the remains of the late Kremlin critic are not clear. CNN's Matthew Chance reports from St. Petersburg.

Ukraine has ceded Avdiivka to the Russians after withdrawing from the strategically important city. Retired US Air Force Col. Cedric Leighton examines why this is a significant move.

Former President Donald Trump unveiled in Philadelphia his newly launched sneaker line, "Trump Sneakers," a day after he and his companies were ordered by a judge to pay nearly $355 million in his New York civil fraud trial.