The foreign ministers of Turkiye, Egypt, and Pakistan are mediating between Iran and the US, but no progress has been reported.
Officials held separate calls with Iranian Foreign Minister Abbas Araghchi and US envoy Steve Witkoff over the weekend, yet no breakthrough occurred.
Talks are conducted through mediators and text exchanges between Trump’s advisers and Iranian officials, Axios cited sources familiar with the discussions.
Iran insists contacts with the US are not negotiations, rejecting proposals to reopen the Strait of Hormuz for a temporary ceasefire.
Tehran demands a full end to the war across the region, rather than a limited or temporary truce, Araghchi said.
Mediators are exploring confidence-building measures to extend Trump’s deadline and potentially move the sides toward direct talks.
President Trump set Tuesday evening as a deadline, warning Iran of attacks on major facilities if the strait remains closed.
US and Israeli strikes since February 28 have killed more than 1,340 people in Iran, including former Supreme Leader Ali Khamenei.
Iran has retaliated with regional strikes and restricted movement through the Strait of Hormuz, disrupting roughly 20 million barrels of daily oil traffic.
Global markets are rattled as stalled diplomacy heightens regional tensions and threatens further escalation.