Residents fleeing the Kiev suburb of Bucha reported Chechens machine-gunning cars, even those with the word ‘children’written in their windscreens. The arrival of Chechen strongman Ramzan Kadyrov, who claims to lead a force of 10,000 of his countrymen, will have unnerved Ukrainian volunteers defending their city. When the Chechens intervened in eastern Ukraine in 2014, they gained a reputation for undue cruelty.