TEHRAN (FNA)- Secretary of Iran's National Security Council (SNSC) Ali Shamkhani announced that Tehran will certainly lodge complaints with the international courts against the ruling by the US Supreme Court which authorized the transfer of $2 billion of Tehran's frozen assets to the families of the victims of a 1983 bombing in Beirut.

"We will certainly file a lawsuit and we hope that legal measures would bring back our properties and prevent this theft," Shamkhani told reporters on the sidelines of a forum in Tehran on Monday.

Naturally, the Iranian nation will leave no stone unturned in addition to legal action to return these properties, he underlined.

His remarks came after Iranian Foreign Minister Mohammad Javad Zarif in a letter to UN Secretary General Ban Ki-moon late April underlined that the country will take legal action against a US court ruling.

"Tehran reserves the right to take countermeasures in response to the decision made by the US Supreme Court," Zarif wrote in his letter.

He said that in the past few years, the US has persistently engaged in a dangerous practice of defying international law and order by allowing private litigants to bring civil action before US domestic courts against sovereign states, including Iran.

"Trials have been organized in absentia; self-serving judgments have been obtained in default; and claims have been laid on the assets of the Iranian people," the Iranian foreign minister said.

Earlier last month, Zarif blasted the US Supreme Court ruling, stressing that Iran doesn�t recognize it.

"The US has long been taking decisions against Iran which contradict the international laws and the Americans have filed different lawsuits against Iran during the past years; (but) we don�t recognize the US courts' rulings," Zarif said in a joint press conference with his Macedonian counterpart Nikola Poposki in Tehran.

Noting that he has raised the issue during his recent meeting with US Secretary of State John Kerry in New York on the sidelines of a UN conference, the Iranian top diplomat said, "We see the US administration as the responsible body with regard to this issue and if they encroach (confiscate Iran's assets), we will claim compensation from the US administration."

Zarif also announced formation of a special committee in the government to study the US decision to transfer Iran's assets.

In 2012, the US Congress passed a law that specifically directed the US-based Citibank to turn over the Iranian assets to families of victims of the Beirut bombing.

Iran argues that Congress is intruding into the business of federal courts over the case. Tehran has long rejected allegations of involvement in the 1983 Beirut bombing.

By Fars News Agency