Trump, speaking Thursday in a White House news conference with Italian Prime Minister Paolo Gentiloni, says there "is no give up" even after the White House's first plan failed last month.
"It shouldn't have been signed".
Trump described the accord as the "worst deal ever negotiated" during his campaign and threatened to tear it up, but analysts say that is increasingly unlikely.
In February, President Trump undermined the multilateral deal by introducing a new round of sanctions against Iran following the country's successful test-launch of a ballistic missile, which Washington said was a breach of the JCPOA.
He said Iran is "the world's leading state sponsor of terrorism" and highlighted its military support of the head of the Syrian regime, Bashar al-Assad, Houthi rebels in Yemen and militias in Iraq and in Lebanon. "He should have said the nuclear deal deals with nuclear issues, and we are going to be very tough in enforcing it, but it doesn't deal with Iran's support for terrorism", Deutch said.
NATO is no longer 'obsolete'
On Wednesday , however, Trump said he had growing concerns about Russia's support of Syrian President Bashar al-Assad. Mr Trump also said he was no longer opposed to a federal exports agency he once dismissed as "unnecessary".
James F. Jeffrey, a former US ambassador and visiting fellow at the Washington Institute, said the White House was hoping that by presenting its continued commitment to the deal as up for debate, it could pressure Iran to rein in its destabilizing activities elsewhere - and influence the other signatories to also pressure Iran to do so.
The U.S. agencies will develop recommendations to President Donald Trump on the nuclear deal with Iran within 90 days.
Tillerson's statement came hours after the U.S. State Department confirmed that Iran is continuing to comply with the terms of the nuke deal.
The P5+1 deal allows Iran an extremely limited civilian nuclear program, and since its implementation, both the U.S. and IAEA have repeatedly affirmed Iranian compliance. "It only delays their goal of becoming a nuclear state".
Foreign policy experts were dismayed by the Trump administration's ongoing aggression toward Iran, and warned that it could set the us on a path toward war. He said that the current administration will not pass "the buck to a future administration on Iran".
Tillerson told reporters in Washington on Wednesday that the USA was conducting a government-wide review of its Iran policy.
Warriors mulling holding Durant out
"I just try to do what's necessary for me in the minutes that I'm out there, and I feel like I'm doing a good job of that". He is dealing with a right index finger sprain and a hand contusion after scoring just two points in 15 minutes in Game 1 .
USA and Iranian naval forces have encountered each other several times in the Gulf.
Meanwhile, US Defense Secretary James Mattis also agreed with Tillerson's claims, stating that he learned during a week-long tour of the Middle East that Iran is destabilizing the region.
In tweet on Thursday, Zarif responded, "Worn-out USA accusations can't mask its admission of Iran's compliance w/ JCPOA, obligating U.S.to change course and fulfill its own commitments".
The historic deal between Iran and six major powers restricts Tehran's nuclear programme in exchange for the lifting of worldwide oil and financial sanctions against the Islamic Republic.
"The fact is, NAFTA, whether it's Mexico or Canada, is a disaster for our country", Trump said.
Tiger Woods has a 4th back surgery
When Woods returned to golf in December at the Hero World Challenge, he looked rejuvenated in a 24-birdie performance. The end goal was to relieve pressure on the nerve allowing it a chance to heal, a statement from Woods' website said.
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