Wasn't us: CIA chief denies role in Iran unrest
Mike Pompeo, named a year ago by US President Donald Trump to head the intelligence agency, told Fox News on Sunday that economic conditions in Iran "are not good".
"That's what caused the people to take to the streets," he said.
Pompeo blamed what he called Tehran's "backward-looking" regime for turning a deaf ear to the voices of the people.
Asked about a claim made by Iran's Prosecutor General Mohammed Javad Montazeri that a CIA official had coordinated with Israel and Saudi Arabia - Iran's regional rivals - to work with exiled Iranian groups to stir dissent in Iran, Pompeo replied simply: "It's false."
"This was the Iranian people - started by them, created by them, continued by them, demanding a better set of living conditions and a break from the theocratic regime."
Trump has repeatedly tweeted his support for Iranian protesters while castigating the Tehran regime, seizing on the recent unrest to again slam the multi-party nuclear deal with Iran as deeply flawed.
Trump faces deadlines around mid-month on whether to renew temporary waivers or restore US sanctions on Iran.
Iran responded to this on Monday by warning the world it must prepare for the US pulling out of the landmark nuclear deal, agreed under Trump's predecessor Barack Obama.
In October, Trump refused to certify that Iran was respecting its commitments under the 2015 nuclear accord, but did not reimpose sanctions or abandon the deal itself.
The administration has not revealed its intentions, but the Iran unrest is seen as a possible pretext for blowing up the nuclear accord.
The US Congress has been working on legislation aimed at tightening terms of the agreement in ways that might satisfy Trump's demands, and Pompeo expressed careful optimism that it might succeed.
"They could do something," he said. "They could take some of the weaknesses from the agreement… extend deadlines (and) snap back sanctions into place where they could really happen."
But Bob Corker, head of the Senate Foreign Affairs Committee, said last week that while talks on Iran were continuing with the White House and its European partners, no new bill was imminent.
Any agreement, Corker said, would take several more weeks to work out.