Isn't Circle also an international exchange and a great option for buying bitcoin with credit cards too ?
Last I heard they were allowing other countries where bitcoin is legal to buy too.
No, Circle allows only the US people to buy, officially. But some people have managed to buy from different countries. This depends solely on your credit card and will the transaction go through.
I have tried doing this with French Mastercard and I didn't have any success. So Circle is pretty much trial and error so the OP can try it and if if works it works.