Please help me to answer attached questions as soon as possible.

1. Defend or refute the following statement: all Markowitz-efficient investors should be global investors. 2. Given the following portfolio and forward contract, how would you attempt to protect your portfolio against a decline in returns over the next year? How successful would you be? Assume that your portfolio and the forward contracts have a Beta of 1.1 with the market. Portfolio - $100 million Forward Contract - $100 million, today's index price is 100, forward contract price 1 year from now is 95 3. How well does portfolio theory work for commercial real estate? Explain. Be as thorough as possible. 4. a) Perform an attribution analysis for the portfolio versus the benchmark given the following data. Calculate allocation effect, selection effect, and interaction effect. b) Assume that the portfolio's allocation to retail was not discretionary. Generally speaking, what are the implications of this