Keir Starmer has resigned as UK prime minister and Labour leader — more political instability for a country that can't keep a government in place.

• Starmer stepped down after his own party signaled it no longer wanted him leading them into the next election.
• He is the seventh UK prime minister in 10 years, following Cameron, May, Johnson, Truss, and Sunak — a rate of turnover almost unheard of even in failing companies.
• The country's core problems — immigration, crime, and a weak economy — remain unaddressed after a decade of revolving-door leadership.
• The UK's wealth is shrinking: income per person now sits near that of Mississippi, America's poorest state, as high taxes push money and people out.
• A contested report alleging a massive child grooming scandal is fueling public anger, with critics saying leaders ignored victims for years.

Outlook: Andy Burnham, the Manchester mayor, is the early favorite to replace Starmer, with a winner expected within weeks — but likely more of the same direction.