Former UK Treasury Chief Rishi Sunak is set to become Britain’s new prime minister, after being chosen on Monday to lead the governing Conservative Party. He will try to shore up a reeling economy that’s sliding toward recession. And, top Ukrainian officials today rejected Russian allegations that Kyiv is preparing to use a so-called “dirty bomb,” a conventional explosive laced with radioactive material, on its own territory. Also, delegations from the Ethiopian government and Tigrayan forces are set to meet in South Africa for peace talks. Plus, the co-founder of the Red Bull energy drink dies. The drink was first made popular in Thailand as a stimulant for sleepy truck drivers.