If you a new comer to the international scene. Then I would recomend using a profesional Flight planning service, like Jeppesen, or Universal. They'll help you cover all the bases from Foreign country rules and regs to providing Wx, Fuel, and handling services at those locations. Also you'll need various permits, time slots, ATC services and etc. In other words have a professional service help and also a professional pilot who's been there and done that. The penalties involved for violations can be severe fines, A/C confiscation, and imprisonment.