Read the full letter here.
Short diary, please discuss only after reading the linked PDF. Take it or leave it, Holder does offer not only an admission of these deaths, but some information about the circumstances.
Holder singles one out that satisfies what he believes to be the legal justification for striking a US citizen abroad, which is somewhat odd since he notes earlier that all 3 were not targeted, when killed:
Besides Anwar An-Aulaqi:
Sr. Operational Leader of Al-Qaeda, intimately involved in detailed plots against the US. Apparently involved deeply with the plot to blow up an airliner bound for Detroit in 2009.
al-Rahman An-Aulaqi (Anwar's son, we knew about this)
Jude Kenan Mohammed