Iran's Foreign Ministry has condemned the "flagrant and unjustified" ceasefire violations by the United States in the Strait of Hormuz, noting that these took place despite ongoing diplomatic efforts mediated by Pakistan.

In the latest developments, an Islamic Revolutionary Guard Corps official said a renewed war with the US is unlikely, but warned that Tehran stands ready to repel any attack, Al Jazeera reported.

"The possibility of war is low because of the enemy's weakness, but the armed forces are lying in wait," said Mohammad Akbarzadeh, a commander of the IRGC Navy.

In a statement issued on Tuesday, reported by Mehr News Agency, the foreign ministry slammed the US Army for continuing its "illegal and unjustifiable actions" since the announcement of the ceasefire on April 8.

The ministry said the US had committed "a flagrant violation of the ceasefire in the Hormozgan region over the past 48 hours", particularly following "multiple instances of maritime piracy against Iranian commercial vessels".

The US has said its attacks were defensive in nature, targeting missile sites and boats attempting to lay mines.

In his call with Qatari Emir Sheikh Tamim bin Hamad Al Thani and other regional leaders, Iranian President Masoud Pezeshkian reaffirmed Tehran's readiness to establish a "dignified framework" aimed at ending the ongoing fighting and regional tensions.

Pezeshkian spoke with heads of state from several mostly Muslim-majority countries on the occasion of Eid al-Adha.

He and his Egyptian counterpart, Abdel Fattah El-Sisi, exchanged greetings on Tuesday. They also underscored the necessity of Islamic unity and indicated a new chapter in regional relations.

Pezeshkian emphasized the need to strengthen cooperation across the Islamic world and expand bilateral relations between Tehran and Kuala Lumpur in his phone call with Malaysian Prime Minister Anwar Ibrahim.

Meanwhile in the US, President Donald Trump was expected to meet with his Cabinet on Wednesday at a precarious moment for talks aimed at ending the conflict with Iran.

He took to social media on Tuesday to grumble that even if Tehran were to offer a complete surrender, the media would paint the end of the conflict as Iran scoring "a masterful and brilliant victory".

'A few more days'

US Secretary of State Marco Rubio said negotiations between the US and Iran on extending the ceasefire and reopening the Strait of Hormuz will take "a few more days".

According to Iranian sources, an initial deal would end hostilities on all fronts, get traffic moving through the strait within 30 days, and possibly provide some financial relief.

More difficult issues such as Iran's nuclear program would be negotiated in the second phase. Iran has been allowing some ships through the strait, giving preference to vessels linked to countries with which it has close ties, Reuters has reported.

The conflict, which began on Feb 28, has caused an unprecedented oil supply shock, pushing up the costs of fuel, fertilizer and food. Traffic through the Strait of Hormuz, which normally carries about a fifth of global trade in oil and liquefied natural gas, has been a fraction of its usual level since the fighting began.

The IRGC Navy said in a statement on Tuesday that as many as 25 other ships and oil tankers have been able to transit through the strait in coordination with the IRGC naval forces, Iranian media reported.

Also on Tuesday, the United Nations Security Council condemned what it said was an "egregious drone attack" that targeted an electricity generator outside the inner perimeter of the Barakah nuclear power plant in the United Arab Emirates on May 17.

Agencies contributed to this story.