DENIS DUMO THE death toll in South Sudan's Warrap State has risen to 148 following fighting this past weekend during a disarmament exercise, a local government official said on Friday, and the U.N. has deployed forces to maintain calm in the region. Heavy clashes erupted over a two-day period between armed civilians and government forces carrying out a disarmament project after some armed youths in the Greater Tonj area started engaging the security forces. It is still unclear what set off the clashes. Tonj East County Executive Director Makuei Mabior Dhuol told Reuters that the death toll jumped due to…