Britain’s former prime minister Keir Starmer, who stepped down as leader this summer after a tumultuous two years in power, announced on Tuesday he would quit parliament to focus on “international affairs”. In a statement on social media, Starmer said it was the “right time” to resign as the MP for the Holborn and St Pancras seat in London after 11 years, triggering a by-election. “It is now time to step aside and focus on other issues: international affairs including defence, security, trade...