The United States is coming under mounting pressure over its use of military drones, following the admission that it accidentally killed two western hostages on the Pakistan-Afghanistan border.
American Warren Weinstein and Italian Giovanni Lo Porto were killed during a strike on a suspected al-Qaeda compound, but as John Clarke reports from Washington DC, critics of drones say the tragedy shows America doesn't really know who it's killing.
IN: "Hundreds of civilians...
OUT: SOC
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