The Republican Party has often been seen as stronger on foreign policy, particularly in a Presidential year.
The last time that a Democrat had the edge on foreign policy in a Presidential campaign was in 1964, before the major escalation of the war in Vietnam, with Lyndon B. Johnson making Barry Goldwater look like a danger to world peace.
Richard Nixon had an edge on strength in foreign policy over Hubert Humphrey and George McGovern, in 1968 and 1972, just as Gerald Ford had an edge over inexperienced Jimmy Carter in 1976.
Ronald Reagan was seen as stronger than Carter and Walter Mondale in 1980 and 1984; and George H. W. Bush had significant foreign policy experience, as compared to Michael Dukakis and Bill Clinton in 1988 and 1992.
Bob Dole was seen as tougher on foreign policy than Clinton in 1996, and George W. Bush somehow came across as stronger in 2000 because of his running mate, Dick Cheney, and kept that edge over John Kerry in 2004.
And finally, John McCain was seen as far more knowledgeable than Barack Obama in 2008.
But now, with the respect Obama has around the world, his active drone attack on terrorists. and the removal of Osama Bin Lade and Moammar Gaddafi, it is tough for Mitt Romney, who has no background in foreign affairs, to look stronger in foreign policy.