Mali’s army spokesperson has said Russian soldiers have deployed to the northern city of Timbuktu to train Malian forces at a base vacated by French troops last month amid persistent insecurity in a country where large swaths of territory are out of the government’s control. The Malian government said late last year that “Russian trainers” had arrived in the country, but Bamako and Moscow have so far provided few details on the deployment, including on how many soldiers are involved or the Russian troops’ precise mission. On December 23, a group of Western countries led by former colonial power France,...