(CNN) - It appears Sam Nunn, the former Georgia senator and a leading Democratic expert on foreign policy issues, can safely be crossed off the list of Barack Obama's potential running mates.
Nunn spokeswoman Kathy Gwin confirms to CNN the former senator will be out of the country through Monday - far from Springfield, Illinois, where Obama is expected to hold a rally with his newly-named VP Saturday.
Gwin refused to release further details about the trip, saying only that Nunn was traveling on "international business."
Nunn's moderate political views, Southern ties, and gravitas on issues of national security and nuclear non-proliferation have made him a perennial VP contender, though he said last month it's a job he has never coveted.
"I have never aspired to that office," said Nunn at an Obama campaign event last month. "It is always nice to have your name mentioned - it is an honor - but I have no expectation of being offered any office, and I am not in any way sitting on the edge of a chair ready to go back into government."
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