In recent years, especially in crises, world markets, reflecting the increasing globalization of information through technology, have tended to move much more in tandem with the US market, limiting the amount by which diversification overseas reduces risk.
A) why? Globalization? B) what can you do about it? Not allocate as much to international? Make equity investment overall same allocation as used to suggest for US stocks alone, and split between US and international? Where to seek better diversification then?

