This is the best summary I could come up with:
"The only change for now is that we're more actively buying whatever stock is left in European warehouses," says Lyuba Shypovych, who heads Dignitas, one of the largest Ukrainian volunteer groups supplying the military with drones.
"Because days are getting shorter and nights longer, this is definitely having an impact on supplies for our military and on how warfare is conducted in general because we don't have as many thermal imaging drones.
The world's largest commercial drone-maker, DJI, halted direct sales to both countries two months after the start of the full-scale invasion in February 2022.
According to Ms Shypovych, the number of Chinese drones made available to distributors in Europe fell sharply between August and September 2022.
An investigation by The New York Times found that Chinese companies have in recent months cut back sales of drones and components to Ukrainians.
Referring to the curbs that came into force on 1 September, Russian newspaper Kommersant, said: "The restrictions imposed by the Chinese authorities on drone exports have seriously complicated their supplies to Russia and led to a shortage of some parts, such as thermal imaging cameras."
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