On November 16, 2025, Tanzanian authorities detained U.S. Army Sergeant Charles Onkuri Onketa, a dual Kenyan-American citizen, for attempting to cross the Kenya-Tanzania border with four CS M68 hand grenades, violating Tanzanian laws prohibiting explosives. This incident unfolds amid political unrest in Tanzania following the disputed presidential election on October 29, which has seen increased violence and government crackdowns on dissent and foreign nationals. The arrest has heightened diplomatic sensitivities, particularly regarding U.S.-Tanzania relations, as both governments seek clarity on the soldier’s motives and the implications for regional security. This situation underscores the fragile security environment in East Africa, emphasizing the critical need for stability in the region amidst growing geopolitical tensions.