Press TV - Iran has warned the United States via Switzerland that any action taken against the country over the false accusation that Tehran was behind the recent attacks on Saudi Arabian oil facilities will be met with an immediate response.

In an official note passed to the Swiss Embassy in Tehran, which represents American interests, Iran reiterated that it was not behind the Saturday attacks on Saudi Arabian oil facilities.

It condemned and rejected claims by US President Donald Trump and Secretary of State Mike Pompeo that Iran had been involved.

The note was handed to the Swiss Embassy on Monday evening, shortly after the US accused Iran of involvement in the attacks, IRNA reported on Wednesday.

In the note, Iran said that any action taken against the country would be met with immediate counteraction, which, it said, would not be limited to the source of the act of aggression.

Last Saturday, Yemeni armed forces conducted a large-scale operation against Saudi Arabia�s Aramco oil installations in response to the Saudi-led war on their country, causing a partial halt in crude and gas production from the world�s top oil exporter.

The Yemeni Houthi Ansarullah movement immediately took credit for the attacks.

Yet, Pompeo swiftly blamed Iran.

A short while later, Trump said the US was �locked and loaded� for a response at the behest of Saudi Arabia, although he later said that he wanted no conflict with any country. Still later, the Pentagon reportedly prepared �response� options for the US president.

Tensions have significantly risen as a result of the accusations, which Iran has denied, and there has been speculation that the US may take military or other forms of action against Iran or Iranian interests.

Iran�s defense minister warns of decisive response

In another development, Iran�s Defense Minister Brigadier General Amir Hatami on Wednesday also dismissed the US accusations about Iran�s involvement in the attacks in Saudi Arabia.

�If a threat is posed to Iran, there will be the same decisiveness with which we responded to the American drone�s minimal incursion [into Iranian skies],� he said, referring to the shooting down of a US drone that had intruded into Iranian airspace on June 20.

Hatami also reiterated Iran�s position that the Yemeni attacks on the Saudi oil facilities were a legitimate act of self-defense.

�It�s pretty clear: there has been a conflict between two countries (Yemen and Saudi Arabia). One party to the conflict is the Yemenis, who have said explicitly that they have done this.�