"It was expected that General McChrystal would seek more troops for Afghanistan in his assessment report of June 2009 and that he would scapegoat India for doing good work among the Afghan people. The report also showed up that, eight years into the Long War, the Americans have still not understood the culture of the people they ostensibly went to help while securing themselves. It was clear from Gen. McChrystal's observations that the Americans are still groping for a strategy against their enemy."
The word "scapegoat" is normally used for blaming somebody who is innocent or he has not done some act that turns out to be damaging or is a mistake. But here, in the above paragraph, it is used for "doing good work". Is is a mistake or there is some metaphoric meaning? (2) What does "while securing themselves" in the second sentence mean?
Thanks. It is taken from an article by Vikram Sood in "the Mail Today" dated 16.10.09.