This is our flagship newsletter Morning Wire. You can subscribe here and we’ll email it to you daily. Welcome back. It’s an extremely hot day in London and I have my fan on full power. We’ve photographed how Europeans are dealing with the heat. Also in the news today: Mamdani proves his endorsement power in New York’s primaries; Trump is set to meet with increasingly frustrated GOP senators; and eight people convicted in a Texas immigration center shooting and protest are sentenced to decades