subjected to. i am wolf blitzer, and you are in "the situation room." now, to an extraordinary story that is unfolding, one you are not likely to see anywhere else. a key nato ally rounding up dozens of top military officers including former navy and air force chiefs. they are accused of plotting to overthrow the government of turkey. that islamic leading government is deeply suspicious of the military which has intervened to keep turkey secular. cnn's ivan watson picks up the story in istanbul. >> reporter: look at how far the mighty have fallen. one by one, 17 retired generals who once commanded a million-man army, escorted by plain-clothed police away from their homes at night. turkish police detained 19 active and retired military