What happened
Mutinous soldiers attacked the Diori Hamani International Airport, the presidential palace, the state broadcaster and Base 101 — the air force base that hosts both the Russian Africa Corps and the AES joint command. State media described hundreds of disaffected soldiers; reporting indicates the mutineers included troops from Niamey and from Ouallam, Téra and Dosso, localities where the army has sustained heavy casualties. Government forces retook Base 101, General Salifou Modi said on state television that the situation was under control, and dozens of soldiers were shown paraded afterwards. On 29 August Russia's ambassador, Viktor Voropayev, told TASS that the command of Base 101 had appealed to Russian personnel for assistance, and that Niger's chief of the general staff, the army chief of staff and the base commander later visited the Africa Corps compound to thank it; to Western agencies he said the mutineers were neutralised "particularly thanks to the intervention" of the force. Reporting attributes ground and aerial support, drones included, to Africa Corps personnel, and describes Russian personnel held by the mutineers early in the episode. Casualty and arrest figures have not been established; the government held a funeral for three presidential-guard members on 31 August. Algeria's defence ministry said on 30 August that Su-30 fighter aircraft, with an air-to-air refuelling aircraft, had landed at Niamey at the request of the Nigerien authorities to support the army against an attempt to destabilise the state, and President Tebboune confirmed the deployment in an interview broadcast on 3 October; reported numbers differ, and no action by the aircraft has been reported. On 11 September a decree replaced the chief of staff of the armed forces, General Moussa Salaou Barmou, with Brigadier General Mamane Sani Kiaou, the army chief of staff, without a stated reason; the handover took place on 16 September.
Two things about this were established on the day and one has been settled since. Established: soldiers from the units taking the heaviest losses in the western theatre turned on the capital, which makes battlefield attrition an internal political fact rather than only a military one; and the base they attacked is where Russia's force and the confederation's joint command both sit. Settled, by Moscow's own account within a day: Russian personnel did act, and did so — the ambassador says — because the base command asked them to. That is the second official Russian acknowledgement of an engagement in this module after the January airport attack, and it dissolves the distinction the first version of this record drew between defending its own base and choosing a side. A force attacked at its base, asked by that base's command to help, and thanked by the army's chief of staff afterwards, has done both at once. What the statement does not establish is whether Africa Corps would act in an internal contest away from its own base, or in Mali or Burkina Faso; that is now the question the Analytical Note on the Wagner–Africa Corps transition carries forward.
Confidence: Moderate
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