Obama hopes high-risk foreign trip closes stature gap

By John Whitesides, Political Correspondent - Analysis

WASHINGTON (Reuters) - U.S. Democratic presidential candidate Barack Obama's overseas trip will be a high-risk debut on the world stage -- with the potential pitfalls at least as numerous as the likely rewards.

Obama's journey to Europe, the Middle East, Iraq and Afghanistan is meant to prove he can credibly navigate the world of international diplomacy and fill the role of U.S. commander in chief, answering critics who say he is too inexperienced for the task.

But a significant gaffe or misstep will only underscore that criticism and bolster Republican rival John McCain's argument that the first-term senator from Illinois is a risky choice for the White House.

"It is a high-stakes trip, but it's one Obama needs to take," said Cal Jillson, a political analyst at Southern Methodist University in Dallas, Texas.

"He has to address the question of whether he is prepared to be president when it comes to national security and foreign policy issues," he said. "It is a big hurdle for him."

The upcoming trip -- exact dates have not been made public for security reasons -- comes less than four months before the November 4 presidential election. Obama's rival McCain, a four-term Arizona senator and former Vietnam prisoner of war who was also a U.S. representative, has highlighted his military and foreign policy credentials.

Opinion polls show significant doubts remain about the world affairs experience of Obama, who has been in the U.S. senate since 2005. Nearly half of voters in a Washington Post/ABC survey this week said his lack of experience would hamper his ability to serve as president.

McCain, 71, was judged to have greater knowledge of the world by a margin of more than 2 to 1, and held an edge on Obama, 46, on his ability to deal with an unexpected major crisis or battle terrorism.