Robert Mugabe

The world's oldest leader, Zimbabwe's Robert Mugabe, turns 93 Tuesday. He has no intention of retiring and his wife has said even if he dies before next year's election, he should run "as a corpse."

She's a former train driver and labor leader — and now an activist in the campaign to drive Zimbabwe's president, Robert Mugabe, from office.

The southern African nation adopted U.S. currency to combat hyperinflation in 2009. As Zimbabwe faces a renewed crisis, citizens are lining up at banks to withdraw dollars as fast as they can.