Vanguard turned up the competitive heat in international investing with today’s launch of the Vanguard Developed Markets ex-US Value Index ETF (VDV) and the Vanguard Developed Markets ex-US Growth Index ETF (VDG). Investors looking for international exposure to equities in developed markets with a style-box tilt in a low-cost profile, these new ETFs may suit their portfolios. International style-b...