The UN refugee agency said on Tuesday it is expanding its Sudan aid plan to Libya and Uganda, after a surge in arrivals in those countries of people fleeing the 14-month-old Sudanese civil war. Sudan is already the world’s worst displacement crisis with some 12 million forced to flee their homes and more than 2 million displaced across borders. The latest expansion of the UN response plan brings to seven the number of African countries taking in large numbers of Sudanese refugees. The arrivals in Libya, northwest of Sudan, raise the prospect that the refugees may continue their journey to Euro…