What does Arizona Senator Kyrsten Sinema’s defection from the Democrats mean for the party, control of the Senate and President Biden’s policy agenda? Sinema said last week that she is registering as an independent, though she will keep her committee assignments. Her announcement came just as Democrats were celebrating Senator Raphael Warnock’s reelection in Georgia, which gave Democrats 51 seats in the upper chamber.

Outgoing Republican Governor Doug Ducey of Arizona is spending nearly $100 million in his final weeks in office to erect a makeshift border wall along the state’s southern boundary with Mexico made of shipping containers and razor wire. Ducey has described it as an effort to complete former President Donald Trump’s border wall, but the shipping containers are being placed on federal and tribal lands without permission.

Leaders from 49 African nations are in Washington, D.C., this week for a three-day summit organized by the Biden administration. The U.S.-Africa Leaders Summit comes as the United States is trying to counter the growing influence of China and Russia in Africa. On Monday, national security adviser Jake Sullivan announced a pledge of $55 billion in economic, health and security support for Africa over the next three years.

We speak with Sarah Leah Whitson, executive director of Democracy for the Arab World Now, or DAWN, about the campaign to hold Saudi Crown Prince Mohammed bin Salman responsible for the 2018 murder of journalist Jamal Khashoggi. This week a U.S.

Brittney Griner’s release from Russia has brought renewed attention to the notorious Russian arms dealer whom the U.S. exchanged for the basketball star in a prisoner swap. Viktor Bout, the former Soviet military officer who became known as the “Merchant of Death,” was serving a 25-year prison sentence in the United States for conspiracy to commit terrorism.

We look at “Lowndes County and the Road to Black Power,” a remarkable new documentary that shows how a small rural community in Alabama organized during the civil rights movement to challenge white supremacy and systematic disenfranchisement of Black residents, and would become, in some ways, the first iteration of the Black Panther Party.