While the world’s attention has focused on the horror unleashed against the Rohingya population in Myanmar’s West, an old war in the country’s North has taken on a new ferocity, forcing thousands to leave their homes and farms and flee for their lives. Since early April, 5,000 people in northern Kachin state have fled renewed fighting between the Myanmar military, known locally as the Tatmadaw, and ethnic Kachin rebels, according to the U.N.