Welcome to Foreign Policy ’s Africa Brief. The highlights this week: The Egyptian government increasingly wades into geopolitics in the Horn of Africa , Chad closes its border with Sudan after clashes spill into its territory, and a new report shows that more than 1,000 Kenyans are fighting for Russia . Sign up to receive Africa Brief in your inbox every Wednesday. Sign up to receive Africa Brief in your inbox every Wednesday. Sign Up By submitting your email, you agree to the Privacy Policy