10% of my portfolio is in this asset class, split among three funds. Aside from a small position in International Explorer from Vanguard, I have bigger positions in International Small Cap: DFISX (29% 1yr return, 13.5% 5yr return) and International Small Cap Value: DISVX (32.7% 1 yr and 19.5% 5yr return) from DFA.
These (DFISX and DISVX) kick tail on the Vanguard International Explorer (23% 1yr and 2% 5yr) though they charge about 0.2% more each year in fees.-- There are inexpensive ways to get a DFA consultant and get access to the funds -- I paid $1,000 once a few years ago and that has been the end of it -- there are no other fees except he gets a few bucks from my brokerage fee when I rebalance.
Int'l small cap has beena great asset class the last few years -- who knows what the future will hold. The efficient frontier studies say it is good spice to have in my soup - the portfolio-- so I hold it. (low correlation to US equities, good return, and intuitive sense for me that small cap international is where growth will happen, and that a heavy dose of the value stocks in that asset class will keep me from overpaying for that growth.). In truth, it was this asset class that got me to DFA, and once there I found lots of other funds to like. Now about 1/3 of our assets are at DFA.