'More transparency' needed over lethal drone strike against British radical, lawmakers says

LONDON (Reuters) - Lawmakers investigating a drone strike which killed a British radical in Syria said they were disappointed by a lack of transparency which hindered their efforts to assess whether the strike was proportional.

British national Reyaad Khan and two other Islamic State associates were driving in a vehicle in Raqqa, the de facto capital of Islamic State, when they were killed in the strike on August 21, 2015.