The list of disagreements is unusually long for the two NATO allies: There's U.S. support for Kurdish fighters in Syria, as well as Turkey’s purchase of a Russian weapons system.
The service plans to try a series of ideas it gleaned from operations in Ukraine and Armenia to build its new tactical cyber and electronic warfare units.
Frightening images of deadly precision strikes on armor in a border region between Armenia and Azerbaijan raise the question: Have modern weapons made tanks obsolete? An expert weighs in.