Iran’s deputy parliament speaker said on Sunday that Iran “will not back down from our position on the Strait of Hormuz, and it will not return to its prewar conditions.” Ali Nikzad, who has no decision-making power in parliament, made the comments while on a visit to port facilities on Iran’s strategic Larak Island, located close to the narrowest part of the strait.

“The Strait of Hormuz belongs to the Islamic Republic of Iran,” he said, adding that the country was working to compensate businesses and property damaged during the war, and that Trump’s blockade plan was certain to fail.

Nikzad reiterated Iran’s position that any ships not associated with the U.S. or Israel will be able to pass after paying a toll. The U.S. has warned shipping companies they could face sanctions for paying Iran in any form, including digital assets, to pass safely.

Iran effectively closed the strait by attacking and threatening ships after the U.S. and Israel launched a war on Feb. 28. Tehran later offered some ships safe passage via routes closer to its shore, charging fees at times.

The U.S. has responded with a naval blockade of Iranian ports since April 13, depriving Tehran of oil revenue it needs to shore up its ailing economy.