Will they send in reinforcements? Hungary is training soldiers for a possible role in keeping migrants from crossing its southern frontier. Warned to expect roughly 40,000 new refugees next week, Hungarian MPs will soon vote on whether to implement stricter border controls. But the army, in anticipation, has already begun preparatory “Decisive Action” exercises. Denmark, meanwhile, is resuming train traffic across its border with Germany, which was halted by police yesterday, as migrants increasingly head for Sweden to leverage the country’s offer of permanent residency to Syrian asylum seekers.