The impeachment trial for South Korea’s embattled president, Yoon Suk Yeol, gets under way with the first hearings in Seoul. Also on the programme: Pope Francis’s biography is published and leaders of Nato’s Baltic nations talk defence. Then: has there been a “breakthrough” in a deal between Israel and Hamas? Plus: the life and legacy of Italy’s Oliviero Toscani, the photographer behind shock Benetton ads.