There are entirely different paths and requirements when applying for specialty training abroad. You must pass different examinations and processes to be accepted, depending on your target country. Examples include the USMLE exams for US residency and the PLAB (future UKMLE) for UK residency. The cost for applications is also higher, and it is very competitive. The process is also longer, adding another year or two for preparations. If you plan to train abroad, research and plan early.