Rosalind S. Helderman traces the origin of Rudolph W. Giuliani’s involvement in Ukraine. Eugene Scott on the end of Sen. Kamala Harris’s presidential campaign. And Anna Fifield on China’s rapid robotic revolution.

The NBA star courting Congress on Turkey

Post Reports is the daily podcast from The Washington Post. Unparalleled reporting. Expert insight. Clear analysis. Everything you’ve come to expect from the newsroom of The Post, for your ears. Martine Powers and Elahe Izadi are your hosts, asking the questions you didn’t know you wanted answered. Published weekdays around 5 p.m. Eastern time.