So some technical knowledge, and some understanding of the licence regulations is necessary. A Licensed Amateur should be aware of the rights and responsibilities of the licence holder. Passing the exam shows that the Amateur has the necessary skills. A Morse qualification is not needed for a licence to use the v.h.f. It is a requirement for the short wave bands below 30MHz.
International contacts are more likely on the short wave bands.
Because of the abbreviations and codes used, Morse is an international language. Some Amateur bands are shared with other services. If your signal is interfering with an essential service in another country, it important that you can understand a message telling you so. When conditions are right, it is possible to have world wide contacts on the 50 MHz band. Most of these can be accessed using v.h.f., or higher, signals.