AFP

Britain's King Charles and Donald Trump hailed their countries' longstanding ties at a White House state dinner Tuesday -- despite the US president claiming the monarch agreed with him on Iran's nuclear weapons.

The White House said on Monday that it was examining Iran's latest proposal to unblock the Strait of Hormuz, two months after a US and Israeli offensive sent shockwaves through the global economy.

Iran vowed it would not reopen the Strait of Hormuz as long as the United States continues to blockade its ports, in a tense standoff on Thursday that has dominated the ceasefire in the Middle East war.

President Donald Trump extended the US ceasefire with Iran to allow more time for peace talks, with Tehran silent on the decision early Wednesday.

Iran said Sunday that it will use “all capabilities” to defend its national interests and security against what it described as growing US threats.

Iran's military has vowed to respond after a US destroyer on Sunday fired on an Iranian-flagged cargo ship in the Gulf of Oman that tried to evade a US naval blockade.

The country's powerful military chief, Field Marshal Asim Munir, headed to Tehran on Wednesday for what would become a three-day trip, where Iranian leaders said he carried US proposals for a second round of peace talks.

Tehran threatened on Saturday to shut the Strait of Hormuz once more if the United States continues its blockade of Iranian ports, hours after Iran announced it had reopened the strategic waterway in the wake of a ceasefire in Lebanon.