U.N. Secretary-General Antonio Guterres urged the warring parties in Sudan to agree to halt hostilities during the Muslim fasting month of Ramadan, a move the Security Council is also considering. "This cessation of hostilities must lead to a definitive silencing of the guns across the country, and set out a firm path towards lasting peace for the Sudanese people," Guterres told the 15-member Security Council. "There is now a serious risk that the conflict could ignite regional instability of dramatic proportions, from the Sahel to the Horn of Africa and the Red Sea." The Security Council is negotiating a British-drafted resolution…