U.K. Prime Minister Keir Starmer. Wpa Pool | Getty Images News | Getty Images Britain's King Charles III set out the agenda of a fragile U.K. government on Wednesday after Prime Minister Keir Starmer faced down calls for his resignation that sparked heavy selling pressure on gilts in the previous session. The State Opening of Parliament and King's Speech, a grand affair in which the monarch presents the government's legislative agenda for the next parliamentary period, took place after Starmer's political leadership remained under threat following the political fallout of the ruling Labour Party's poor performance in local elections last week. Starmer appears to have seen off any immediate leadership challenge for now, and will hope that today's pomp, pageantry and policy agenda can shift attention away from the current crisis. That doesn't mean the leadership threat has gone away.…