IDF Chief of Staff Lt.-Gen. Aviv Kochavi and Prime Minister Benjamin Netanyahu have warned in recent days of the increased threat posed by the Iran.
"We have executed on a maximum pressure campaign for sanctions. They have worked, they are working, they are cutting off the money," Mnuchin said.
The Trump administration is not closing the door to potential nuclear talks with Iran by sanctioning Zarif, who it does not consider a significant decision maker, a U.S. official said.
The Wall Street Journal said Trump has also expressed displeasure with Mnuchin over stock market turbulence and the Treasury secretary's skepticism about the White House trade actions against China.
The grisly killing of journalist Jamal Khashoggi became an issue during an event where each adviser hoped to highlight a Trump administration positive.
Got a minute? Here's the week in review.
"Instead of blocking their path to a nuclear bomb, it actually paved their way to a nuclear arsenal," Netanyahu said of JCPOA.
Holding the purse strings
Israeli and American money men agree on a series of joint economic policies.
Some 40 senators are expected to join the delegation, along with congressmen and the heads of major American Jewish organizations.