WASHINGTON — The Trump administration slapped another round of sanctions on Iran on Friday and, brushing aside demands from Democrats for evidence, elaborated on its assertions that the decision to kill a top Iranian commander was justified by an imminent threat to United States embassies and other American interests.
“We had specific information on an imminent threat,” Secretary of State Mike Pompeo told a news conference at the White House. “And those threats included attacks on U.S. Embassies. Period, full stop.”
Mr. Pompeo stopped short of repeating what President Trump said a day earlier about a specific plot against the American Embassy in Baghdad, but dismissed criticism, including from members of Congress, that the administration had failed to share any intelligence that backs up its case for the killing early Friday of Maj. Gen. Qassim Suleimani in an airstrike.
“I don’t know exactly which minute,” Mr. Pompeo said. “We don’t know exactly which day it would have been executed, but it was very clear, Qassim Suleimani himself was plotting a broad, large-scale attack against American interests and those attacks were imminent.”
Mr. Pompeo said information about the threat had been shared with members of Congress, contradicting some members of both parties who said they had received few specifics. Lawmakers from both parties described the briefings as historical lectures as opposed to the typical presentation about classified matters. One lawmaker said the information was “something you could go on Wikipedia and get. It was that basic.”
Asked how he defined an imminent threat, Mr. Pompeo replied: “This was going to happen. And American lives were at risk. And we would have been culpably negligent, as the chairman of the Joint Chiefs of staff said, we would have been culpably negligent had we not recommended to the president he take this action on Qassim Suleimani.”
Mr. Pompeo spoke about the threats after he and Treasury Secretary Steven Mnuchin announced the latest round of economic sanctions on Iran. The sanctions were the first substantive response by the United States since Iran launched missiles this week at American forces in Iraq.
Iran is already under crippling sanctions from the United States and the latest round was narrowly targeted at industries including steel, construction, textiles and mining. They also apply to eight senior Iranian officials who were involved in a recent ballistic missile attack on bases where American troops were stationed.
The damage to Iran from the additional measures will be negligible, said Peter Harrell, a sanctions expert at the Center for a New American Security. “When it comes to putting materially more economic pressure on Iran, the Trump administration is something of a victim of its own success — and I think we are reaching the end of the road for what ‘maximum pressure’ can achieve when it comes to Iran’s economy,” Mr. Harrell said.
One area of Iran’s economy where the sanctions could have an impact is deterring investment from nations like China and Russia, said Ryan Fayhee, a sanctions expert at the law firm Hughes Hubbard & Reed.
Mr. Fayhee said the latest round of penalties appeared intended to tamp down the situation with Iran. And the Trump administration does not have a lot of other options for how to respond unless it publicly discloses the justifications for killing General Suleimani, he said.
“This attempt to de-escalate could avoid the need to build domestic and international support for further military action — that would only come with a public disclosure the underlying factual support for strike targeting Suleimani,” said Mr. Fayhee, who previously worked on sanctions issues at the Justice Department’s national security division.
Mr. Fayhee said the administration could also ask the United Nations to pursue sanctions, but doing so would require the United States to publicly share intelligence that justified the strike.
In December, the Trump administration slapped new sanctions on the largest shipping company in Iran and a major airline. The United States believes both companies had roles in transporting material to ballistic missiles and nuclear programs. And in June, the Trump administration imposed sanctions meant to prevent top Iranian officials from using the international banking system — a retaliatory move in response to Tehran’s attacks on two oil tankers in the Gulf of Oman.
The newest round of sanctions was the latest move in the weekslong clashes between Washington and Tehran that started in late December when Iran attacked an Iraqi compound, killing an American civilian contractor.
The United States responded by striking Iranian-backed militia in Iraq, which drew outrage from pro-Iranians who then stormed the American Embassy compound in Baghdad, chanting “Death to America.”
Three days later, an American airstrike near the Baghdad airport took out Iran’s most powerful commander. Less than a week later, Iran responded by attacking two bases in Iraq where American troops were stationed. No Americans were killed.
Michael D. Shear, Zach Montague and Alan Rappeport contributed reporting.