Western countries using Russian aircraft

What is the likelyhood of a ‘Western’ nation (UK, US, EU including Australia and New Zealand) ever being able to purchase a Russian aircraft for their AirForces?

I don’t just mean the modern fighters but also transport aircraft and helicopters.

With several nations actively seeking replacements for aircraft purchased in the 70s and 80s is the purchasing of Russian aircraft a realistic option for these countries, will Vladimir Putin allow MiG, Sukhoi etc to sell their wares to them?

Or does America have such a strong grip on Western airforce equipment?