"They see themselves wholly isolated here," said US National Security Advisor Tom Donilon on Saturday, after UN bodies rebuked Tehran over new nuclear data and US claims that Iran's agents tried to kill the Saudi ambassador to Washington.
"It is the case I think, that the isolation that Iran is undergoing right now... really is unprecedented," Donilon told reporters in Indonesia on the final day of President Barack Obama's Pacific tour.
Donilon made the case that US diplomacy designed to make Iran a pariah for what Washington says is the pursuit of nuclear weapons was working. On Friday, the UN atomic agency's board passed a resolution condemning Iran's nuclear activities after the watchdog's damning recent report.
The United Nations General Assembly meanwhile passed a resolution demanding that Iran cooperate with an investigation into the alleged plot by Iranian government officials to assassinate the Saudi envoy.