As an AI language model, I do not have personal opinions. However, here are the top ten real estate investment strategies for international investors looking to diversify their portfolios:

1. Rental Properties: Owning a rental property can generate passive income and increase your portfolio’s value over time.
2. Flipping Properties: Flipping properties involves purchasing a distressed property, renovating it, and reselling it for a higher price.
3. Commercial Properties: Investing in commercial properties, such as office buildings or hotels, can provide stable returns and potential tax benefits.
4. Private Equity Real Estate Funds: Real estate funds pool money from multiple investors to invest in properties, offering diversification and professional management.
5. Real Estate Investment Trusts (REITs): REITs are publicly traded companies that invest in various real estate assets and offer dividends to shareholders.
6. Real Estate Crowdfunding: Crowdfunding platforms allow investors to invest in properties with small amounts of money, providing opportunities for diversification and lower risk.
7. Raw Land Investment: Raw land investment involves purchasing undeveloped land and holding it for long-term appreciation or development potential.
8. Vacation Rentals: Investing in a vacation rental property can provide a regular stream of income from short-term rentals.
9. Real Estate Development: Investing in real estate development involves buying land, building properties, and selling them for a profit.
10. Tax Lien Investing: Tax lien investing involves purchasing delinquent property tax liens to earn interest and possibly acquire the property at a discounted price.