An Afghan commando who opened fire on American troops killed three of them and wounded another, US and Afghan officials said, in an insider attack that was claimed by the Taliban. The so-called "green-on-blue" attack on Saturday is the latest in a line of incidents where Afghan soldiers have turned their weapons on international forces they are working with. It also comes as the Taliban ramp up their campaign against the Western-backed government in Afghanistan, and as US President Donald Trump mulls sending more troops into the lengthy conflict.



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