Press TV - US Ambassador to the United Nations Nikki Haley has reiterated previous accusations leveled against Iran over its nuclear program and the violation of UN Security Council resolutions.

Haley claimed Tuesday that Iran should not be allowed �to use the nuclear deal to hold the world hostage,� adding that�Tehran�s nuclear deal with the P5+1 group of countries must not become �too big to fail.�

The US envoy said Iran must be held responsible for its missile launches and repeated Washington�s accusations of supporting terrorism and acting in breach of the UN resolutions.

Haley�s remarks followed a warning from Iranian President Hassan Rouhani against new US sanctions targeting the Islamic Republic. He said Tehran was capable of snapping back to pre-nuclear deal status if Washington persisted with its policy of sanctions and threats.

�The new US administration officials should know that the failed experience of threats and sanctions forced their predecessors to come to the negotiating table. If they prefer to return to those times, Iran will definitely return to a situation much more advanced than the start of the [nuclear] negotiations, not within months and weeks, but in a matter�of hours and days,� the Iranian president said in a televised speech.

Rouhani underlined�Iran�s commitment to the nuclear deal, which is known as the Joint Comprehensive Plan of Action (JCPOA), adding that Tehran will follow up and respond to any breach of the deal by other parties.

The nuclear deal, which was reached between Iran and world powers in 2015, put limits on Iran�s nuclear activities in exchange for, among other things, the removal of all nuclear-related bans against the Islamic Republic.

The agreement is being reviewed by the US State Department every 90 days to declare whether Tehran was abiding by it. The new US administration notified Congress of Iran�s compliance for the first time in April.

This is while the International Atomic Energy Agency (IAEA) has time and again reported that Iran has been abiding by the terms of the nuclear deal.