Our politics reporter Kellen Browning went to the Democratic Socialists of America’s national summit in Chicago to learn more about the group’s new platform.

In theory, the War Powers Act gives Congress the power to end a war. But our chief White House correspondent, Peter Baker, describes how President Trump is the latest president to find ways to engage in war without congressional approval.

Our Pentagon correspondent Helene Cooper explains how a lack of transparency reflects a tension between the Pentagon’s claims of operational security and the American public’s right to know what the military is doing in Iran.