Iranian Foreign Minister Mohammad Javad Zarif rejected a U.S. warning against carrying out space vehicle launches and missile tests, saying on Thursday they did not violate a U.N. resolution.

U.S. Secretary of State Mike Pompeo issued a pre-emptive warning to Iran earlier on Thursday against pursuing three planned space rocket launches that it said would violate a U.N. Security Council resolution because they use ballistic missile technology.

“Iran’s launch of space vehicles – & missile tests – are NOT in violation of (Resolution) 2231. The US is in material breach of same, & as such it is in no position to lecture anyone on it,” Zarif wrote in English on Twitter.