Do sanctions work? Yes, international sanctions may not be able to stop Russian production of new fighter jets, but they can slow it down and drive up the costs. A new article from the British news outlet, The Telegraph, suggests that Russia’s production of their new supposedly stealthy and fifth-generation Sukhoi Su-57 “Felon” fighter jets has stalled. This comes after Russia apparently shot down their own massive S-70 Okhotnik-B (Hunter-B) ‘loyal wingman drone’ – in one of its first tests over the battlespace in Ukraine.