TEHRAN - Iran's President Hassan Rouhani said Monday that the Iranians would make the United States regret for re-imposing sanctions against the Islamic republic.

"Through unity and solidarity, the Iranians will weather away the return of sanctions," Rouhani said. "Trump will learn that these kinds of pressures did not surrender Iranians in the past and will never do so in the future."

Rouhani also said that the US administration "is not trustworthy for any negotiations" after its withdrawal from the Iranian nuclear deal.

"Talks need honesty," the Iranian president said in a televised speech on Monday, urging the United States to prove its will to solve problems through negotiations.