In India, all the platforms that offers solution to the eCommerce are good. All of the basic features and functionalities that a website of an eCommerce needs are provided. Those are Catalog management, UI designs, shopping cart, promotions and etc.
For the international sales, payment gateway and fulfillment are your challenge. By getting the payment gateway, it will allow international customers in multi currencies including refunds to transact. Almost all of the platforms can integrate any of the Payment Gateway.
Your biggest challenge will be fulfillment. You are going to put into account the cross boundary delivery, taxation and others.