In his new book, CIA analyst, distinguished scholar, and best-selling author Chalmers Johnson argues that US military and economic overreach may actually lead to the nation’s collapse as a constitutional republic. It’s the last volume in his Blowback trilogy, following the best-selling “Blowback” and “The Sorrows of Empire.” In those two, Johnson argued American clandestine and military activity has led to un-intended, but direct disaster here in the United States.