WASHINGTON — Even as the United Nations’ nuclear watchdog said in a new report Friday that Iran had accelerated its uranium enrichment program, American intelligence analysts continue to believe that there is no hard evidence that Iran has decided to build a nuclear bomb.

Recent assessments by American spy agencies are broadly consistent with a 2007 intelligence finding that concluded that Iran had abandoned its nuclear weapons program years earlier, according to current and former American officials. The officials said that assessment was largely reaffirmed in a 2010 National Intelligence Estimate, and that it remains the consensus view of America’s 16 intelligence agencies.