According to Iran's semi-official Tasnim news agency, Iran's central military command warned on July 21 that any U.S. attack on Iranian nuclear facilities would be considered a regional escalation. The command stated it would target all U.S. interests, allied nations, and supporting countries if such action occurs.
Meanwhile, U.S. President Donald Trump said at the White House on the same day that the U.S. is tracking Iranian nuclear material at Pickax Mountain and indicated strikes would follow soon, stating "we will be hitting that area, and we'll be hitting it very hard."