British Prime Minister Boris Johnson on Monday defended his government’s treatment of Ukrainians fleeing war, after France accused U.K. authorities of “inhumane” behavior towards the refugees.

Johnson said Britain was being “very, very generous,” but wouldn’t have “a system where people can come into the U.K. without any checks or any controls at all.”

Britain says it expects to take in as many as 200,000 Ukrainians displaced by Russia’s invasion, and has set no upper limit on the number it will accept.

But very few have managed to reach Britain so far. The Home Office said “around 50” visas had been granted by Sunday, though Johnson said Monday he wasn’t sure that number was correct.

French Interior Minister Gerald Darmanin said Sunday that hundreds of Ukrainian refugees in the English Channel port of Calais had been turned away and told by British authorities that they must obtain visas at U.K. embassies in Paris or Brussels.

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