General Retires, Readies to Become Ambassador to AfghanistanWASHINGTON - Army Lt. Gen. Karl Eikenberry retired today, 24 hours before being sworn in as the U.S. Ambassador to Afghanistan.Until today, Eikenberry served as the deputy chairman of the NATO Military Committee in Brussels, Belgium. Tomorrow he will be sworn in by Secretary of State Hillary Rodham Clinton as ambassador."I'll make this