Colombia - Colombian spies tricked leftist rebels into handing over kidnapped presidential candidate Ingrid Betancourt and three U.S. military contractors Wednesday in a daring helicopter rescue so successful that not a single shot was fired.

Betancourt, who was seized on the campaign trail six long years ago, appeared thin but healthy as she strode down the stairs of a military plane and held her mother in a long embrace. She said she still aspires to...