Complex sentence: However, since the 1970s, the Five Principles again came to be seen as governing Sino-Indian relations, and as norms of relations between states, they have become widely recognized and accepted throughout the region.
Split into simpler sentences: However, since the 1970s, the Five Principles again came to be seen as important in Sino-Indian relations, and more generally as norms of relations between states. They have become widely recognized and accepted throughout the region.