PODGORICA, Montenegro — World War III? Not us, say puzzled and concerned Montenegrins. Public officials in the tiny Balkan nation in southeastern Europe didn’t know what to say initially when U.S. President Donald Trump suggested tiny Montenegro, which has a military with fewer than 2,000 members, could be the spark that sets off a global Armageddon. That the leader of the world’s dominant superpower would characterize the country’s population of about 620,000 as “very strong” and “very aggressive people” first rendered their government speechless.