I like ESD and own some, but I would pay no heed to a Morningstar rating on any closed-end fund. Morningstar does not cover CEFs and basically hasn't a clue how to evaluate or compare them.
If you want to research ESD you might wish to check the following links:
Western Asset Emerging Markets Debt Fund web site
ESD Portfolio Characteristics as of 09/30/07
ESD Press Releases
Changes to Non-Fundamental Investment Policies (important to read)
ESD Managed Distribution Policy (interesting that ESD has NOT applied for exemptive relief to implement the MDP)
ESD SEC Filings
Happy New Year,
Steve