The United States and Iran again exchanged attacks near the Strait of Hormuz early on Thursday amid a ceasefire and ongoing negotiations on ending the war.
U.S. media reports said Mr Trump was dissatisfied with Iran’s latest peace proposal.
The call follows EU leaders’ meetings in Cyprus.
Iranian officials reported that thousands have been killed in the country.
Iran said it would decisively implement a permanent mechanism to control the Strait of Hormuz following U.S. threats.
Ships must comply with Iranian security regulations and coordinate their passage with relevant authorities, the mission said late on Tuesday.
One person was killed following an attack on two oil tankers in the Gulf, Iraqi authorities said early Thursday.
The Israeli military has killed Islamic Jihad’s top commander in Lebanon, the Israel Defence Forces said on Monday.
Japan has reiterated its commitment to contributing to the security of Nigeria and other West African countries through maritime safety.
