Iran did not take part in technical talks slated for Sunday due to recent attacks on the country and unfulfilled conditions of a memorandum of understanding with the United States, an Iranian official has told state TV.
"For example one of the reasons is checking if we have access to the unfrozen funds, if there is no access then this condition has not been fulfilled," Mehdi Fazaeili of the Office of Preservation and Publication of the Works of Iran’s Supreme Leader said.
Iran had launched missiles and drones at US military sites in Kuwait and Bahrain shortly after US President Donald Trump threatened to wipe out the Iranian leadership if they did not stick to the interim agreement to end their war.
Pakistan, a key mediator, earlier said talks would resume on Tuesday.
Trump's administration said nothing has been cancelled and technical talks are on track for the coming days as planned.
Israel said on Sunday it had struck Iran-aligned Hezbollah militants in Lebanon on Saturday, just a day after it agreed the latest ceasefire deal with Lebanon to calm fighting that Iran says must end if the wider agreement is to stick.
The US military said earlier it had struck Iran again, hours after a tanker was hit in the Strait of Hormuz, the world's most important energy shipping route, which Iran has largely closed for most of the conflict.
"There may come a point when we are no longer able to be reasonable, and will be forced to militarily complete the job that we very successfully started," Trump said on social media.
"If that happens, the Islamic Republic of Iran will no longer exist!" he added.
The 14-point interim peace accord was meant to halt the fighting, which the US and Israel started on February 28, and reopen the strait while talks proceeded on issues such as Iran's nuclear program.
About an hour after Trump's post, Kuwait's army said its air defences were responding to missile and drone attacks while Bahrain said sirens had sounded there.
Iran's Islamic Revolutionary Guard Corps said in a statement its navy and air forces had launched missile and drone operations targeting US military sites in Kuwait and Bahrain.
The Guards said US strikes had violated the ceasefire and "will result in the complete halt of all diplomatic processes," state-run Press TV said.
The IRGC navy command said US bases in the region "will experience hell in the coming days".
A US official, confirming Iran had targeted US facilities, told Reuters there were no reported US casualties or major damage to its sites in the Middle East but the situation was still unfolding.
Hours later, alarms sounded for a second time in Bahrain, where authorities said an Iranian attack damaged a residential building in Muharraq province, with no casualties reported.
Bahrain urged the United Nations Security Council to hold an urgent session to hold Iran accountable.
The Kuwaiti army said it had intercepted two ballistic missiles with no damage or casualties.
Separately, Qatar said one of its citizens had died after sustaining injuries from shrapnel aboard a vessel that had gone missing on Saturday.
A second person was injured in the incident, which was due to "military operations in the area," the interior ministry said, without giving a location or apportioning blame.
US Central Command said its forces had carried out the new strikes after a Panama-flagged tanker was attacked by an Iranian drone on Saturday.
"Iran was given a chance to honour the ceasefire agreement but elected not to," Central Command said in a statement.
US strikes were "in direct response to continued Iranian aggression against commercial shipping" and targeted Iranian military surveillance, communications, air defence, drone storage and mine-laying facilities, it said.
Explosions were heard in Sirik in southern Iran, Iranian state broadcaster IRIB said without providing details.
Iranian Foreign Minister Abbas Araqchi said responsibility for returning maritime traffic in the strait to pre-war levels lay solely with Iran and urged others not to intervene "in Iran's administration of the strait".
with AP
