‘Conclave’ author Robert Harris on the secretive tradition of selecting a new pope

In our news wrap Friday, the U.S. Army plans to host a massive parade for its 250th anniversary that happens to be on President Trump's birthday, organizers of an aid shipment bound for Gaza say drones attacked their vessel in international waters and an Illinois man was sentenced to 53 years in prison for killing a Palestinian American boy. PBS News is supported by - https://www.pbs.org/newshour/about/funders

The Houthis are an Iranian-backed rebel group that controls parts of western Yemen. Most of the rest of the country is controlled by the internationally recognized government, which has fought the Houthis with support from a Saudi-led coalition. In March, the U.S. started a campaign targeting Houthi leadership. Nick Schifrin discussed the latest with Yemeni Vice Foreign Minister Mustapha Noman. PBS News is supported by - https://www.pbs.org/newshour/about/funders

Three months into his second term, President Trump is shaking up his national security team. National Security Adviser Mike Waltz, whose use of an unclassified messaging platform caused an uproar starting in March, will leave his job and be nominated to be U.S. ambassador to the United Nations. Secretary of State Marco Rubio will replace Waltz as national security adviser. Nick Schifrin reports. PBS News is supported by - https://www.pbs.org/newshour/about/funders

In our news wrap Thursday, Ukraine agreed to a deal giving the U.S. access to its rare-earth elements and resources like oil and natural gas, the Trump administration is pushing for more behavioral therapy for transgender youth instead of gender-affirming health care and Transportation Secretary Sean Duffy announced plans to recruit and retain more air traffic controllers. PBS News is supported by - https://www.pbs.org/newshour/about/funders

Streaming viewership of "Conclave" surged 3,200 percent in the week after Pope Francis’ death. Viewers turned to that movie, which won the Best Adapted Screenplay Oscar, to help them understand one of the most secretive elections on the planet. The film is based on the novel by Robert Harris, who joined Geoff Bennett to break down the complicated process of electing the next pontiff. PBS News is supported by - https://www.pbs.org/newshour/about/funders

Vietnam marked the 50th anniversary of the fall of Saigon and the unification of the country under Communist rule after decades of war. From the ashes, the U.S. and Vietnam now enjoy close relations, due in no small part to American veterans who sought to revive a country they once helped destroy. Nick Schifrin reports. PBS News is supported by - https://www.pbs.org/newshour/about/funders

President Trump signed an executive order aimed at softening the blow his tariffs have imposed on the automotive industry and U.S. manufacturers. But tensions with China remain high and China’s Ministry of Foreign Affairs issued a video saying it would not back down from the trade war with the U.S. Geoff Bennett discussed more with Gavin Bade of The Wall Street Journal. PBS News is supported by - https://www.pbs.org/newshour/about/funders

Canada's Liberal Party secured a fourth consecutive term after a narrow win in an election that was seen as one of the most consequential in its recent history. Prime Minister Mark Carney flipped his party's fortunes with a campaign focused on combating President Trump’s tariffs and threats of annexation. Nick Schifrin discussed the result with Shachi Kurl of the Angus Reid Institute. PBS News is supported by - https://www.pbs.org/newshour/about/funders

In our news wrap Monday, a massive power outage in Spain and Portugal brought daily life for millions to a complete standstill, the Vatican announced the conclave to elect a new pope will start on May 7, Houthi rebels say at least 68 people are dead after an alleged U.S. airstrike hit a prison holding African migrants and Canadian voters are deciding who will be the nation's next prime minister. PBS News is supported by - https://www.pbs.org/newshour/about/funders

The Kremlin offered a short-term ceasefire in Ukraine to start next week. The U.S., Ukraine and European allies have all been pushing Moscow to accept an immediate month-long ceasefire. Meantime, Russian forces appear to be slowly gaining ground in areas that could end up as part of a land swap. Nick Schifrin reports. PBS News is supported by - https://www.pbs.org/newshour/about/funders