The line of argument is so simplistic it boggles my mind. Lets get few facts straight:
a. Goal of terrorists is not to topple US government. You can't draw parallels between things without understanding their motive. Primary goal of a terrorist organisation operating out of Islamist state is to flex muscle and create terror. Often it is - revenge killings so as to deter state forces (of US, India, NATO). So far with each drone strike - make no mistake US is creating more terrorists. As a Indian, I detest each time our government kills/arrests a law abiding citizen of India - for just being a Muslim. Terrorists win each time. If you can accept those innocent people as collateral damage, you should be ready to accept 9/11 or Mumbai bomb blast victims as collateral too?
b. Deep down I believe some US citizens simply do not understand how terrorists work. They think, if you drone strike a bunker with important terrorist leader - problem will simply go away.
c. Look up Operation Cyclone (http://en.wikipedia.org/wiki/Operation_Cyclone). CIA trained and financed Taliban when it suited them. Did Russia drone strike key CIA administrators? India is similarly accused of training LTTE (http://www.lankaweb.com/news/items/2013/07/28/india-armed-tr...). A terrorist Organization which oddly enough killed our prime minister. Did Srilanka drone stike India?
The truth is - there is power and power allows powerful countries to make rules and let them get away with it. US uses drones strikes against Pakistan because they know they will get away with it. They dare not do the same against, Russia, China or even India. Assuming that drone strikes help reduce terrorism is just too naive.