How to see sponsored ads of Yahoo in a different country?

As Yahoo shows only USA Ads

[KFish]

Does anyone know how to see a PPC ad shown in Yahoo for another country?
For example if you reside in Australia but you advertise in the USA, then how to see your ads in Yahoo?

[Western]

Free international proxy servers are easy to find if you look around. Especially specific to the USA.

[KFish]

Thanks! Isn’t there an easy way? Like in Google if you add &gl=us in the query string, you should be able to see USA ads.