Russian Foreign Minister Sergei Lavrov said on Tuesday that Moscow had still not seen any evidence that Iran was developing nuclear weapons.

Trump has said the war was needed to prevent Iran from developing a nuclear weapon and to thwart its long-range ballistic missile program.

Iran has denied it is seeking nuclear weapons and said the U.S. and Israeli assault was unprovoked, occurring as Tehran and Washington were in negotiations on a nuclear accord.

Trump withdrew from a prior international agreement curbing Iran’s nuclear program during his first term in 2018, three years after it was signed.