Ukrainian President Volodymyr Zelensky arrived in Saudi Arabia on Thursday, after saying earlier that Ukrainian drones could help improve security in the Gulf region.

"Important meetings are scheduled. We appreciate the support of those who are ready to work with us to ensure security, and we support them too", he said in a message on social media.

Earlier on Thursday, Zelensky offered Ukraine's expertise in drone technology as a way of improving security across the globe, particularly in the Gulf.

"This matters because energy security - and the cost of living, particularly in Europe - depends on their oil, gas and other resources, and stable global markets," he said in a video message to the Joint Expeditionary Force, a security alliance which held a summit meeting in Helsinki.

"The key is not only producing new weapons - especially drones - not just technology, but also real experience in using it, and integrating it with radars, aviation, and other air defence systems. We have this experience," he said.