FNA- Secretary of Iran's Expediency Council (EC) Mohsen Rezayee described US President Donald Trump's threats to Tehran as "slogans", stressing that any new sanctions against his country will first harm major international firms and investors.

"Trump will face big problems in Europe and Asia by implementing any new sanctions as the global economy can no more afford new sanctions," Rezayee said on Wednesday.

Noting that Trump's measures against Iran will harm the global economy and major international investors more, he said, "Therefore, everyone is displeased with Trump's remarks, and his measures and sanctions will be nothing but mottoes."

Rezayee had also on Saturday stated that Trump's move to relieve his decision-making power over the nuclear deal to the Congress would mean a political suicide for the US president.

Trump wants to hand the fate of the nuclear deal to the US lawmakers instead of certifying the deal and extending suspension of sanctions against Iran, Rezayee said in a press conference in Tehran.

"The Congress has two to three months to decide about suspension of sanctions or reimposing them but Trump is attempting to put the burden on the Congress's shoulders," he added.

"This shows that Trump has a problem. I think that it's a type of suicide," Rezayee said.

According to the US media, Trump has a message to Republicans in Congress -- you don't like the Iran nuclear deal, so you deal with it.

His expected decision to decertify the agreement would allow him to save face and dent Barack Obama's legacy. And by handing its fate to lawmakers, he would also limit his political exposure to any decision to kill off a pact backed by US allies.

His expected move is already being condemned by critics, who warn he is putting US national security at risk to satisfy his own prejudices toward a deal he has branded an "embarrassment" to America.

Trump has twice previously been forced to certify that Iran is complying with its terms as the International Atomic Energy Agency and US military leaders say Iran is honoring the agreement.