U.S. President Donald Trump said that Iran will not be able to obtain nuclear weapons.

Speaking to reporters in the Oval Office, he also claimed that the United States had “decimated” Iran’s naval and air forces, as well as its air defense and radar systems.

According to Trump, Iran has “very limited capabilities” remaining, including only part of its missile arsenal. He added that, in his assessment, about 80% of its missile production capacity had been destroyed.

The U.S. president reiterated that Tehran will not possess nuclear weapons, noting that “everyone understands that.”