Security forces in Khartoum hit protestors with tear gas as they continue to demonstrate against Sudan’s military rulers, whom they blame for violence in that nation’s southeast; Tom Gardner, a correspondent for the publication The Economist, describes his and other journalists’ challenges as they try to cover conflict in Ethiopia; And, millions of Africans face food insecurity, and their governments face instability, as rising food and fuel prices triggered by the Russian attack on Ukraine continue to hurt.