Both McCain, Obama exaggerating Iran's nuclear program

Sens. John McCain, R-Ariz., and Barack Obama, D-Ill., say that Iran is developing nuclear weapons.

The U.S. intelligence community, however, thinks that Iran halted an effort to build a nuclear warhead in mid-2003, and the U.N. International Atomic Energy Agency, which is investigating the program, has found no evidence to date of an active Iranian nuclear-weapons project.

The candidates' comments raise questions about how carefully the two have studied the public record on what's become a major campaign issue and is one of the most difficult foreign-policy challenges likely to confront the next president.