Iran has placed a stranglehold on the key shipping lane -- threatening fuel supplies and roiling energy markets -- in retaliation for US-Israeli strikes that triggered the Middle East war.

"No one has involved us specifically in the issue of the Strait of Hormuz. During my visits, I told representatives of the Middle East and Gulf countries: Ukraine is ready to help with everything related to defence," Zelensky said.

He was speaking to a small group of journalists, including AFP, on Thursday.

He cited Kyiv's experience in restoring passage through the Black Sea, which Russia had blocked at the beginning of its invasion of Ukraine.

In a separate interview, Zelensky said reopening the strait would require drone interceptors, military convoys and electronic warfare.

"We stand ready to help with this," he said.

US President Donald Trump has called on Washington's allies to help secure the waterway.

But some including French President Emmanuel Macron doubt a military operation to unblock the Strait of Hormuz is realistic.

The UN Security Council has postponed a vote scheduled Friday on authorizing the use of "defensive" force to protect shipping in the strait.

Ukraine has feared being sidelined as the world turns its attention to the war in the Middle East.

Kyiv has sought to leverage its expertise in fighting off the Russian invasion, as Ukraine's armed forces have been downing Russian drones similar to those used by Iran in attacks on Gulf nations.

Last week Zelensky visited several Middle Eastern countries and signed defence agreements with Qatar and Saudi Arabia.

"I believe that we have changed the attitude of the Middle East and the Gulf region toward Ukraine for many years ahead," Zelensky said.