Grueling work, financial stress, and shifting values are pushing too many of the navy’s nuclear personnel out of the service. Here’s how it can turn things around.

The advanced U.S. fighter aircraft will mark a significant upgrade to Ukraine’s air force, but their impact on the war with Russia will hinge on several factors.

The country’s steady military and technological progress, coupled with its leader Kim Jong Un’s increased hostility toward foreign influences, raises concern about Pyongyang’s ambitions. Here’s a bre…