Russia's Growing Influence in Africa Raises Western Concerns.

The stability of Chad, a key US ally in Africa, is under threat from Russian paramilitary group Wagner, which is plotting to topple the Chadian government, according to leaked US intelligence documents. The country is also facing internal repression, including the killing of scores of peaceful protesters by security forces in October. Western officials are concerned about the situation, but critics say the US and other Western governments have been muted in their response to Chad's repression. The situation highlights the challenges facing foreign policymakers who seek to support allied governments while advancing democratic values.