yesterday s eruption tapered off after about two hours or so. aetna has several villages on n its slope. air traffic was not affected this time, but airliners often have to alter routes to avoid clouds of ash. a feud between dick chen and colin powell that simmered during the bush administration is now at full boil thanks to the former vice president s nene book which goes on sale today. abc s jonathan karl has details. reporter: they ve been two titans of republican foreign policy for decades. working side by side through no less than three wars. first we re going to cut it off, then we re going to kill it. reporter: but in his new book, dick cheney unloads on colin powell. accusing him of undermining president bush as secretary of state, being openly disdainful of the president s policies. cheney claims credit for kicking powell out of the administration after the 2004 election. now itit powell s turn. they are cheap shots and the