With talk of a 51st state, a mystery: Why is Trump so obsessed with Canada? Martine Powers is back to share her reporting on Trump’s perplexing fixation on Canadian annexation.

The fallout from the Signal leak

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.