Trump announced on May 8 that Washington was walking away from a nuclear agreement, officially known as the Joint Comprehensive Plan of Action (JCPOA) signed between Iran and the P5+1 group of countries in 2015.
Iran should not count on Europe's proposals package to fix the nuclear deal following Washington's exit, Iranian Supreme Leader Ayatollah Ali Khamenei said Saturday.
Even though Rouhani did not mention the Strait of Hormuz, his comments were nonetheless seen as a threat to the narrow strategic passageway located between Iran and Oman, where at least 18.5m barrels of oil were transported every day in 2016, according to a United States energy department report.
If the Strait of Hormuz was successfully blocked at its narrowest point, a 54-kilometer wide waterway between the coasts of Iran and Oman, it would cut off sea shipments of oil by Iraq, Saudi Arabi, Bahrain, Qatar, and the United Arab Emirates.
Zarif made the remarks in a meeting between Ayatollah Khamenei and Iranian ambassadors, charges d'affaires and officials from the Ministry of Foreign Affairs in Tehran on Saturday.
"Negotiations with the Europeans must continue, but we must not wait for their offer indefinitely", said Khamenei. However, secondary USA sanctions remained.
The International Atomic Energy Agency (IAEA) has repeatedly confirmed that Tehran has been meeting its nuclear commitments fully.
"The idea that problems can be resolved through negotiations or relations with the United States is a major error", he added.
Tehran has harshly criticized the decision in May of U.S. President Donald Trump to unilaterally pull the United States out of the 2015 nuclear deal between Iran and six world powers and reimpose sanctions.
"I have long pointed out that it is not possible to count on the words and even the signatures of the Americans, so negotiations with the United States are of no avail", the Leader said.
Khamenei added: 'The word and even the signature of the Americans can not be relied upon, so negotiations with America are of no avail.
Addressing the Saturday meeting, Ayatollah Khamenei said talks with the USA were "useless", adding that while negotiations with the Europeans should continue, Iran should not count much on their package of proposals.
Europe is opposed to the move and has vowed to find ways of maintaining its trade ties with Iran, which under the deal curbed its nuclear program in exchange for a lifting of sanctions.