Up until July 2012, the scale of defections from the Syrian Army, though hard to quantify, was too small to make an impact on the strength of that army, according to Aram Nerguizian from the Washington-based Center for Strategic and International Studies. Strategically important units of the Syrian armed forces are always controlled by Alawite officers; defecting soldiers – by July 2012 "tens of thousands" according to the Syrian Observatory for Human Rights – are mainly Sunni without access to vital command and control, Nerguizian said, however the formed Syrian Minister of Defense General Dawoud Rajiha killed in the 18 July 2012 Damascus bombing was a Christian.