Gates: U.S. has evidence of Iran helping insurgents

? Serial numbers and other markings on bombs suggest that Iranians are linked to deadly explosives used by Iraqi militants, Defense Secretary Robert Gates said Friday in some of the administration’s first public assertions on evidence the military has collected.

While the Bush administration and military officials have repeatedly said Iranians have been tied to terrorist bombings in Iraq, they have said little about evidence to bolster such claims, including any documents and other items collected in recent raids in Iraq.

National security officials in Washington and Iraq have been working for weeks on a presentation intended to provide evidence for Bush administration claims of what they say are Iran’s meddlesome and deadly activities.

The materials – which in their classified form include slides and some two inches of documents – provide evidence of Iran’s role in supplying Iraqi militants with highly sophisticated and lethal improvised explosive devices and other weaponry. They also lay out Iranian efforts to train Iraqis in military techniques.

Yet, government officials say there is some disagreement about how much to make public to support the administration’s case. Intelligence officials worry the sources of their information could dry up.

Among the evidence the administration will present are weapons that were seized over time in U.S.-led raids on caches around Iraq, one military official in Washington said on condition of anonymity because he was not authorized to speak publicly.

Other evidence includes documents captured when U.S.-led forces raided an Iranian office Jan. 11 in Irbil in northern Iraq, the official said. Tehran said it was a government liaison office, but the U.S. military said five Iranians detained in the raid were connected to an Iranian Revolutionary Guard faction that funds and arms insurgents in Iraq.

The assertions have been met with skepticism by some lawmakers still fuming over intelligence reports used by the administration to propel the country to war with Iraq in 2003. Gates’ comments came as a new Pentagon inspector general’s report criticized prewar Defense Department assertions of al-Qaida connections to Iraq.