Democratic presidential front-runner Hillary Clinton sharpened her attacks on rival Barack Obama's experience yesterday, a day after a poll showed her falling slightly behind him in Iowa.
Six weeks before Iowa kicks off the state-by-state battle for the Democratic nomination, ms Clinton questioned Mr Obama's claim that living in a foreign country as a youth helped shape his world view and contribute to his experience.
"Voters will judge whether living in a foreign country at the age of 10 prepares one to face the big, complex international challenges the next president will face," Ms Clinton said during a campaign stop in Shenandoah, Iowa.
"I think we need a president with more experience than that," said Ms Clinton, who has repeatedly touted her own experience as first lady and questioned the readiness of the first-term senator from Illinois for the White House.
Mr Obama has said his four years living in Indonesia as a child contributed to his knowledge of the world and how people live around the globe.
Campaigning in New Hampshire, he said experience was no substitute for judgment and criticized Ms Clinton's votes to authorize military action in Iraq in 2003. Remarking that Ms Clinton has said she has met with world leaders, Mr Obama said: "Which world leader told her that we needed to invade Iraq?"
"There are a couple guys named Dick Cheney and Donald Rumsfeld who had two of the longest resumes in Washington and led us into the biggest foreign policy disaster of a generation," Mr Obama said at a campaign stop in Alton, New Hampshire. "So a long resume doesn't guarantee good judgment. A long resume says nothing about your character."
It was the second consecutive day that the two candidates have exchanged barbs on the question of experience, and follows the release of a Washington Post-ABC News poll on Monday showing Mr Obama opening a four-point lead over Ms Clinton in Iowa, within the statistical margin of error.