Washington said a high-level meeting on Iran would take place in Doha on Tuesday, with President Donald Trump's top envoys Steve Witkoff and Jared Kushner attending, while technical talks would also continue on the sidelines.
Mr Trump said Iran had requested a meeting and that it would take place in the Qatari capital. His press secretary, Karoline Leavitt, told Fox News that Mr Witkoff and Mr Kushner would attend.
"Special envoy Witkoff and Jared Kushner will be flying to Doha for high-level meetings this week, as we continue to discuss the memorandum of understanding. On the sidelines of those high-level talks will be the technical talks," she said.
"As far as we're concerned, we're holding up our end of the ceasefire. Violence will be met with violence," Ms Leavitt added.
Iran's deputy foreign minister Kazem Gharibabadi said no technical meetings of the working groups in the framework of the agreement were planned for this week.
But any new talks would come after the US and Iran agreed to halt attacks for now and allow shipping through the Strait of Hormuz. The new talks indicate a return to diplomacy after days of escalating military exchanges.
Iran's Islamic Revolutionary Guard Corps at the weekend warned that only Tehran-approved routes were valid for commercial shipping through the strait, in defiance of a UN-backed plan to establish a safe corridor along the Omani coast.
An Iranian projectile struck a cargo vessel later that day, prompting renewed US military action against Iran. Tehran retaliated by launching missiles and drones at US military sites in Kuwait and Bahrain on Sunday.
Bahrain reported damage to a residential building but no deaths, and Kuwait said it intercepted two ballistic missiles. A US official said there were no reported American casualties or major damage.
According to Iran's Fars news agency, Mr Gharibabadi said consultations with Qatar, including following up on the implementation of the other side's commitments, were continuing as usual.
He said the first round of technical talks would take place only after agreement had been reached on the time and venue, and added that consultations were continuing through intermediary countries.
A senior Iranian source had told Reuters there would be a meeting in the Qatari capital on Tuesday, but unlike previous technical talks between Tehran and Washington in Switzerland, the focus would be on managing the Strait of Hormuz and de-escalating tensions.
Despite the US-Iran military confrontations, maritime intelligence company Windward said the strait stayed open on Sunday, with 44 transits and "no disruption to freedom of navigation".
In another sign of de-escalation, a FlySepehran jet from Tehran landed at Dubai International Airport on Monday, the first to do so since the US-Israel war against Iran began on February 28.
Iran repeatedly attacked Dubai airport during the war but the global hub remained operational throughout most of the conflict.
The developments revive diplomatic efforts that had appeared close to collapse after several days of strikes and counter-strikes across the Gulf, with Washington and Tehran accusing each other of breaching an interim ceasefire.
Before it emerged that talks would resume, Mr Trump had said the US may be forced to "complete the job" militarily, warning Iran would "no longer exist" if diplomacy failed.
The June 17 agreement was designed to halt fighting, reopen the Strait of Hormuz to commercial shipping and create a 60-day window for technical negotiations on issues including Iran's nuclear programme.
Those talks had been expected to resume in Switzerland at the weekend but were derailed by the latest exchange of fire between Washington and Tehran, The Wall Street Journal reported. No formal negotiating round had been confirmed before the latest breakthrough.
Iran's Parliamentary Speaker
Despite the renewed diplomatic push, violence continued elsewhere in the region as Israel said it struck Hezbollah infrastructure in southern Lebanon for a second consecutive day, as Iran insisted stability in Lebanon remained essential to the broader agreement.
Iranian Parliamentary Speaker Mohammad Bagher Ghalibaf said Tehran was "seriously pursuing" efforts to end the war in Lebanon, describing the issue as a key part of last week's US-Iran negotiations in Switzerland and the preliminary agreement reached in Islamabad.
Mr Ghalibaf said Iran, the US and Lebanon had agreed to establish a conflict-control unit to oversee implementation of the agreement and he called for it to convene as soon as possible.
"Our goal is to end the war in Lebanon, return the refugees to their homes, end the occupation and secure the withdrawal of the Zionist regime from Lebanese territory," he said, quoted by Iranian media outlets.
Iran and Oman conducted the first meeting of a joint committee on the Strait of Hormuz in Muscat on Monday, an Iranian deputy foreign minister said on his X account on Monday.
The meeting's participants discussed ways to co-ordinate more tightly on issues relating to the Strait of Hormuz in a manner consistent with the shared interests and sovereignty of both countries, Oman's Foreign Ministry said.
The two sides reaffirmed their commitment to international law. They also reviewed frameworks for co-operation on navigation and maritime services.
Oman's Foreign Minister Badr Al Busaidi said his country remains committed to keeping the Strait of Hormuz open, safe and free for international navigation, and does not support imposing transit fees on ships using it.
In the interview with Radio Monte Carlo published on the Omani Foreign Ministry's X account, Mr Al Busaidi said Muscat continues to support the implementation of the agreement between Iran and the US, while maintaining contact aimed at reducing tension and promoting peace.
He stressed any future arrangement governing Hormuz must remain within the framework of international law and the UN Convention on the Law of the Sea.
Mr Al Busaidi said Oman does not support charging vessels for crossing the strait, distinguishing such fees from voluntary payments for maritime, navigational and environmental services.
Elsewhere, Ali Velayati, a senior adviser to Iran's supreme leader, reaffirmed Tehran's backing for Hezbollah, calling the group "the pillar of Lebanon's independence" and "the true guardian of Lebanon's existence and independence", in a post on X.
