plug. not only for the peshmerga who whose tactics and numbers have paid off but also for the coalition who brought in the air support. we saw an a-10 attack plane in the skies today. that has simply changed the equati equation, put the peshmerga on top. we've seen the results down there. it's an unsteady calm certainly. there's isis around but an enormous move here in the one city symbolic in how it fell into isis hands. the damage the yazidi with is with them. >> a big development there. pentagon officials confirm targeting the mass executioner known as jihadi john in a u.s. drone strike in syria. investigators are trying to determine definitively whether mohammed emwazi was killed. we'll get the latest from cnn pentagon correspondent barbara starr. barbara? >> reporter: it was a highly classified operation, carried