António Guterres condemned a "horrific" drone strike on a UNISFA logistics base in Kadugli that killed six Bangladeshi peacekeepers and wounded several others, warning that attacks on UN personnel may constitute war crimes.Sudanese military officials and the Sovereignty Council blamed the Rapid Support Forces (RSF), which denied the charges or gave no immediate comment, while Bangladesh interim leader Muhammad Yunus called for accountability and support for survivors.Guterres urged an immediate ceasefire to allow a comprehensive Sudanese-led political process amid a two-year war that has caused tens of thousands of deaths and a dire humanitarian crisis, and Samy Magdy of the Associated Press reported from Cairo.