Iranian President Hassan Rowhani called on the United States on Thursday to fully comply with its obligations under the nuclear deal, warning that failing to do so will "further erode the credibility" of Washington.
In his speech at the UN General Assembly, Rowhani said that with the lifting of "cruel sanctions" eight months ago under the deal, known as the Joint Comprehensive Plan of Action (JCPOA), Iran has become the most profitable investment destination in the region.
However, he called on the US to adhere to the agreement.
"The lack of compliance with the JCPOA on the part of the United States in the past several months represents a flawed approach that should be rectified forthwith," Rowhani said.
On July 14, 2015, Iran concluded a pact with the US, Britain, France, Germany, Russia and China, ending a stand-off over Tehran's nuclear programme in a far-reaching deal that was meant to bring the country back into the international fold.
In exchange for inspections of its nuclear sites and reductions in its stocks of low-enriched uranium, Iran was supposed to see Western economic sanctions targeting Iranian oil exports, banking ties and other areas lifted.
Many Western banks, however, have been cautious about resuming ties with Iran, amid legal uncertainty as some sanctions remain in place, for example, in the US.
In a press conference later Thursday, Rowhani accused the US of delays in carrying out its obligations and "a complete lack of transparency," mentioning the banking issue as an example.
"They frighten the big banks with a threat of potential action by the United States," he said. "This is something we oppose."
He also slammed a US Supreme Court ruling in April allowing the US government to collect nearly 2 billion dollars from frozen Iranian assets held by US banks to compensate families of Americans killed in Iranian-sponsored terrorist attacks.
Rowhani called the move an "international heist," adding that Iran had filed a complaint against the US at the International Court of Justice in The Hague.
"I'm certain that we will be legally victorious and the United States will be fined for this transgression," Rowhani said.