International organizations are usually characterized by having a parent company and multi-sites. Microsoft Dynamics is a perfect fit for this organizations and Arquiconsult have done many projects with this scenario.
Is one solution available to serve the different requirements of your local sites? In a multi-site and international deployment, it makes sense to standardize on one solution across the countries where the solution is available.
Open borders, removal of customs barriers, much better and cheaper infrastructure and communication, internet and IP telephony have made the world much more available, much easier to reach and simpler to integrate into the company.