Following IRGC claims that it downed a U.S. drone in Iranian airspace:

“This measure destroyed the United States’ grandeur, and after the incident, everyone realized more than ever that we are powerful. The Islamic Republic of Iran has turned into an authentic regional power and this issue is not tolerable for the U.S.”“IRGC chief: We will not be overcome in any war,” Tehran Times, July 9, 2019 https://www.tehrantimes.com/news/437937/IRGC-chief-We-will-not-be-overcome-in-any-war.