By SRDJAN NEDELJKOVIC and JAMEY KEATEN MEDYKA, Poland (AP) — A slowdown for good or a temporary lull during the storm of war? While the number of refugees who have flooded out of Ukraine nears 4 million, fewer people have crossed the border in recent days. Border guards, aid agencies and refugees themselves say Russia's unpredictable war on Ukraine offers few signs whether it's just a pause or a permanent