President Trump returned to the White House on Saturday to meet with his national security team, as he continues to consider a potential U.S. strike on Iran. It comes as several B-2 stealth bombers head to the Pacific, according to two defense officials, though their mission remains unclear. NBC News' Vaughn Hillyard is traveling with the president. The conflict between Israel and Iran escalated further on Saturday, with Israel's military saying it struck deep inside Iran using 60 fighter jets guided by precise intelligence. NBC News' Matt Bradley reports from Tel Aviv. Nearly 151 million people were under heat alerts from Colorado to Maine on Saturday, with major cities like New York City, Washington, D.C., Denver and Chicago set to be directly impacted with life-threatening temperatures. NBC News' Adrienne Broaddus has the latest. After more than three months in ICE detention, Columbia University student and pro-Palestinian activist Mahmoud Khalil returned home to the New York area after a federal judge ordered his release. NBC News' Maya Eaglin has more. Newly unsealed court documents are giving new insight into Vance Boelter, the suspect accused of killing a Minnesota lawmaker and her husband. According to those documents, an FBI agent investigating the case said Boelter was a "prepper" who had given his wife a "bailout plan." NBC News' Aaron Gilchrist has the details. A hot-air balloon caught fire and fell from the sky on Saturday in southern Brazil, killing multiple people, according to local officials. NBC News' Ryan Chandler has more. Massachusetts high school baseball player Brady Cullen celebrated the end of his radiation treatment by ringing the bell and was cheered by family and friends from his baseball team. NBC News' Jose Diaz-Balart has this inspiring story and more in this week's Good News Wrap-Up. 

President Trump said that Israel and Iran agreed to a ceasefire he said will take effect in stages over the next 24 hours. NBC News' Richard Engel reports. President Trump thanked Iran for notifying the U.S. before it targeted a military base in Qatar housing U.S. troops. Trump called it a ‘weak response.' NBC News Gabe Gutierrez reports. Insurance companies require doctors to get approval before providing some care to patients, a process known as prior authorization. Doctors and patients alike are often frustrated by the process, which can lead to delays in care. Now, the organization that represents insurance companies has pledged changes to the way it works. NBC News' Erin McLaughlin reports. Doctors say there have been a number of developments with new weight loss drugs, which could make them easier for patients to take. One potential breakthrough: a medication patients would inject monthly, instead of weekly. NBC News' Maggie Vespa reports. It will be dangerously hot for the next couple of days as high heat and humidity make it feel like 100 degrees in several cities. New York City declared a state of emergency and is poised to hit triple digits before Houston this year. The heat wave is scorching the eastern half of the U.S. NBC News' Emilie Ikeda reports.