The US has asked Ukraine for help defending Gulf allies against Iranian drones, according to President Volodymyr Zelensky.
He said Ukraine's partners had been reaching out and there had been "requests from the American side". The Pentagon declined to comment.
Zelensky made clear Ukraine would help only on the condition that its own defence was not weakened and that there were diplomatic gains for Kyiv - suggesting, in particular, that Ukraine would be willing to swap its interceptor drones for more US Patriot air defences to protect against Russian ballistic missiles.
The war in the Middle East has raised fears Ukraine could suffer if its allies are distracted by the conflict.
There have also been concerns about a potential shortage of interceptor missiles and Russia benefiting from rising oil prices, the proceeds from which are a key source of funding for its war effort.
