Story highlights Zarif agrees with Trump that US policy created ISIS

Says travel ban, which included Iran, was an insult to whole nation

Munich, Germany (CNN) Sending US ground troops to Syria to fight ISIS will fan flames of extremism in the region that will impact the security of the whole world, Iranian Foreign Minister Mohammad Javad Zarif told CNN's Christiane Amanpour Friday.

He also said that the agreement with Iran to limit its nuclear program -- brokered in 2015 by the US, Iran and five other world powers -- will stay in place, despite noises to the contrary from members of US President Donald Trump's administration.

Speaking on the sidelines of the Munich Security Conference, Zarif said there was an international consensus not to let the agreement -- which took two years to negotiate -- unravel.

"I believe everybody, including experts in the United States, know this was the best deal possible for all concerned, not just Iran but the US too," he said.

"It was a triumph of diplomacy over coercion, because coercion doesn't work any more."