A showdown looms at the United Nations over Iran on Tuesday as President Donald Trump and Iranian leader Hassan Rouhani are set to square off during...

Iran's Foreign Minister Mohammad Javad Zarif warned Sunday that failure to save the nuclear deal after the exit of the United States would be "very dangerous" for Tehran.

Sir: The abrogation of the Iran nuclear peace deal by President Donald Trump did not serve the cause of peace. This was an agreement negotiated by the international community...

Signatories of the Iran nuclear deal are meeting in Vienna on Friday in a bid to save the agreement, as Iran warned the deal had been put "in intensive care" by Washington's dramatic withdrawal earlier this month.

Another sad day in international diplomacy and global security dawned when President Donald Trump pulled the United States (U.S.) out of a deal aimed at stopping Iran from acquiring nuclear weapons in return for allowing the Persian nation to trade with other countries.

The EU's foreign policy chief warned Monday there was "no alternative" to the Iran nuclear deal, after US Secretary of State Mike Pompeo vowed unprecedented sanctions against Tehran following Washington's withdrawal from the pact.

Iran said Saturday it would wait to see whether Europe produces tangible results in overcoming US sanctions before it decides whether to stay in the nuclear deal, as a top EU official visited Tehran to present plans for maintaining trade ties.

The US decision to reimpose sanctions on Iran could scare off European investors but oil-thirsty China may step into the void and ramp up business links with the country.

Iran's foreign minister was due to leave Saturday for a whirlwind diplomatic tour as world leaders scramble to salvage something from the wreckage of a key nuclear deal after Washington withdrew.

Germany, France and Britain will "do everything" to ensure that Iran remains in the landmark 2015 nuclear deal, Chancellor Angela Merkel vowed Wednesday, a day after the US pulled out of the accord.

President Donald Trump, yesterday, pulled the United States out of an international agreement aimed at stopping Iran from obtaining a nuclear bomb, and said he would re-impose economic sanctions on Tehran immediately.

A bill was introduced in the US House of Representatives on Thursday aimed at tightening the terms of the Iran nuclear deal, despite Tehran's rejection of changes to the accord.