That's a lot of money to invest in the health of one country's stock market -- a successful terrorist attack (think a dirty bomb in NYC or even multiple cities) could wipe out a significant portion of that overnight - it will likely recover eventually (as it did after 9/11), but that's a time when you'll want access to your money
I'd diversify across countries, and maybe precious metals.
That's a lot of money to invest in the health of one country's stock market -- a successful terrorist attack (think a dirty bomb in NYC or even multiple cities) could wipe out a significant portion of that overnight - it will likely recover eventually (as it did after 9/11), but that's a time when you'll want access to your money
I'd diversify across countries, and maybe precious metals.