Iran's top military adviser warned the US that Tehran would take ground-invading soldiers hostage and sink American ships implementing a blockade in the Strait of Hormuz.
The US and Iran are reportedly considering a two-week extension of the ceasefire to give both sides more time to negotiate a peace deal.
Pakistani army chief Field Marshal Asim Munir and interior minister Mohsin Naqvi landed in Tehran to help renew talks between Iran and the United States.
The next round of talks will 'very likely' be held in Pakistan again, according to White House Press Secretary Karoline Leavitt.
US, Israel fully aligned on goals, with Israeli Prime Minister Benjamin Netanyahu saying they want to see enriched material removed from Iran and the elimination of enrichment capability.
The US Central Command said it has stopped ten vessels from sailing out of Iranian ports during the first 48 hours of the naval blockade.
Oil prices fell in early trade on Thursday amid hopes of fresh US-Iran talks and an extension of the two-week ceasefire.
