it followed the official end Process_end of the decade-long second chechen war Hostile_encounter on 16 april 2009 .

As the war progressed Achieve from its initial invasion phase in 2003 to a nearly decade-long occupation , American public opinion shifted Change towards favoring a troop withdrawal ; in May 2007 , 55 % of Americans believed Know that the Iraq War was a mistake , and 51 % of registered voters favored Supporting troop withdrawal .