NATO defense ministers will meet on Wednesday to try to drum up more military support for Ukraine amid a sharp drop in deliveries of weapons and ammunition to the war-ravaged country in recent months. The ministers will also debate a call from NATO’s commander to lift restrictions on the use of their aircraft and other equipment so they can be used to defend the alliance’s eastern border with Russia, Belarus and Ukraine more effectively. A series of mysterious drone incidents and airspace violations by Russian war planes has fueled concerns that President Vladimir Putin might be testing NATO’s defensive reflexes.