Tokyo's move comes as oil prices remain elevated amid the effective closure of the Strait of Hormuz.
President announces Mamitiana Rajaonarison as prime minister after Herintsalama Rajaonarivelo was dismissed.
Thousands face worsening illness after closure of key crossing halts medical evacuations.
Paul Thomas Anderson's political chase film earned six Oscars, beating the vampire thriller Sinners, which scored four.
One Battle After Another wins six Oscars, while Sinners takes four awards.
Brent crude tops $106 a barrel as markets see no end in sight to the halt of traffic through the critical waterway.
Iran's Foreign Minister Abbas Araghchi says Tehran never sought a ceasefire with the US, and is ready for a long war.
Pressure grows on the US president's administration as war costs spiral and the mission's endgame remains unclear.
The US president's call for allied naval forces comes as Iran's Revolutionary Guard says, 'Let him send his ships'.
Meanwhile, more than 20,000 patients await evacuation as the Rafah crossing is set to partially reopen on Wednesday.