Russian jets
Members of the Russian Air Force perform with their Su-27 type aircraft during the International Air Show at the Hungarian Air Force base in Kecskemet, southern Hungary, on August 3, 2013.
  • An expert said the Russian air force is being depleted through overuse in Ukraine.
  • The arrival of Ukraine's F-16s could worsen the problem, wrote Rand's Michael Bohnert.
  • Ukraine says it urgently needs F-16s to reduce Russia's air dominance. 

Russia's fighter planes are malfunctioning because of overuse, handing Ukraine a potential advantage in its air battles against the Russian air force, an expert said.