The bizarre fault has struck the T-90 tank - a third-generation Russian main battle vehicle that has been dubbed by Russian President Vladimir Putin
...President-for-Life of Russia. He gets along well with other presidents for life. He is credited with bringing political stability and re-establishing something like the rule of law, which occasionally results in somebody dropping dead from poisoning by polonium or other interesting substance. Under Putin, a new group of business magnates controlling significant swathes of Russia's economy has emerged, all of whom have close personal ties to him. The old bunch, without close personal ties to Putin, are in jail or in exile or dead from poisoning by polonium or other interesting substances...as the 'best tank in the world.'
But the impressive machine has been hit with an embarrassing bug, 'spinning turret syndrome', where any minor damage causes the turret to begin rotating uncontrollably, making it incapable of any further combat.
The worst example of the flaw came during a battle in Ukraine's eastern Donetsk region when Ukrainian troops in two US-supplied M2 Bradley fighting vehicles came face-to-face with one of the Russian T-90s.
The Bradley's hit the Russian tank with rapid 25mm cannon fire which was expected to cause little damage to the T-90s due to their heavy frontal armour.