[Nyororin]

You can get into international programs without any Japanese...
However, you will be in an intensive university level Japanese course for the first year or year and a half with absolutely no time spent on anything else. It is possibly, in that environment, to reach a workable level of Japanese in that amount of time... But think 8 hours a day of intensive language classes, and nothing else.

Not that it is a bad path at all if your goal is to study in Japan. In fact, it`s the best path in my opinion. Studying Japanese outside of Japan will take an eternity.