In the absence of the Swiss ambassador, Issa Kameli summoned the chargé d'affaires of the Swiss Embassy, which represents the U.S. in Tehran, to the Ministry of Foreign Affairs and conveyed Iran's firm resolve to respond decisively and immediately to any threat.

The Swiss charge d’affaires was summoned on Monday over recent threats against Iran made by U.S. President Donald Trump.

During the meeting, Kameli condemned and rejected the inflammatory remarks, calling them violations of international law and the principles outlined in the United Nations Charter.

The Iranian official presented an official note warning against any malicious activity, emphasizing the Islamic Republic of Iran’s unwavering resolve to counteract any aggression.

The chargé d'affaires assured Kameli that the matter would be promptly relayed to the U.S. government.

Trump has warned that he might order military strikes against Iran if Tehran fails to reach an agreement with Washington on its nuclear program. “If they don't make a deal, there will be bombing,” Trump said in an interview with NBC News. However, he added that he could instead impose “secondary tariffs” on Iran if no deal is reached, as he did during his first term in office.

Earlier in the day, Leader of the Islamic Revolution Ayatollah Seyyed Ali Khamenei warned that if Washington commits any hostile act against Iran, “it will certainly receive a heavy blow in return.”