TEHRAN -- Ukraine has begun expelling Iranian students from the country, claiming that Tehran had exported drone technology to Russia, media reports say.

Iranian students were quoted as saying that Ukrainian immigration officials had given them 10 days to leave the country. “The immigration officer behaved very angrily with us and told us our visa wouldn’t get extended,” one student was quoted as saying. The Iranian embassy apologized to the students and said there was nothing they could do, he said.