The mixed signals underscored the fragile state of talks aimed at ending a Middle East war that has shaken global energy markets and effectively closed the Strait of Hormuz.
“Iran is very much intent, they want very much to make a deal. So far they haven’t gotten there. We’re not satisfied with it, but we will be,” Trump said at a televised White House cabinet meeting.
“Either that or we’ll have to just finish the job.”
Trump also appeared to direct a warning at Oman, a US ally and mediator in the conflict, when asked about a possible short-term arrangement allowing Iran and Oman to control the Strait of Hormuz.
“No, the strait is going to be open to everybody,” Trump said. “It’s international waters and Oman will behave just like everybody else or we’ll have to blow them up. They understand that, they’ll be fine.”
The White House did not immediately clarify whether Trump had misspoken. Oman has played a mediation role in the war and has itself come under attack from Tehran.
Iranian media reported early Thursday morning that three loud explosions were heard near the port city Bandar Abbas, around 1:30 am (2200 GMT Wednesday).
Earlier on Wednesday, Iranian Revolutionary Guards official Mohammad Akbarzadeh said the likelihood of “war is low because of the enemy’s weakness”, but warned the military was “lying in wait with full magazines” if attacked, Tasnim news agency reported.
Trump, who said at the weekend a deal was close, also told the cabinet meeting he was in no rush.
A day earlier, Iran accused the US of breaching the ceasefire after the most serious strikes since the truce took effect, and warned it was ready to retaliate.
The US military said it launched “self-defence strikes” on Iranian missile sites and mine-laying boats overnight Monday to Tuesday.
Iran and the US have traded threats for weeks while negotiating through Pakistani mediation.
Neither side appears ready to compromise on the main sticking points: Hormuz and Iran’s nuclear programme.
On Wednesday, the Revolutionary Guards’ navy said only ships “willing to abide by Iranian order” could pass through Hormuz.
US Secretary of State Marco Rubio said Tuesday that a deal remained within reach, but that the Hormuz would be reopened “one way or the other”.
Iranian authorities also partially restored access to the global internet Tuesday after a three-month shutdown.
“I do feel better now because I finally can use my favourite applications,” said Hana, a 20-year-old student in Tehran who gave only her first name.
“At the same time, I have this concern that war might resume any minute and just cut me off again from my friends.”
Amir, a 27-year-old software developer in the Iranian capital, also feared renewed fighting despite talk of a deal.
“I feel like nothing is certain yet,” he said.
“The daily question is: Will there be missile strikes tonight?”