My friend, licensing is an issue. The licensing deals MTV must have made and youtube's policies as well makes it impossible for them to make music and video content available in many countries. I have spent plenty of years in the content copyright area in media industry so i say out of experience. But what surprises me is that this video is uploaded under standard youtube license which should make it available in all countries, ideally. however.. how licensing is done is what makes this video not available in many countries. Hope this clarifies your query.
Enjoi the song :)