Well, the USA were happily helping them with the technology back in 2013...
https://www.reuters.com/article/us-b...9BJ0RH20131220
They are known to have been building 2 test reactors in the Gobi desert since 2017, supposed to be ready by 2020...
https://www.nextbigfuture.com/2017/1...ng-drones.html
And producing hydrogen is a possibility from a nuclear reactor.