Here’s a good piece on current issues in international adoption by EJ Graff, published in Democracy: The Baby Business.
She advocates requiring Hague accreditation for all international adoptions (instead of only enforcing the Hague guidelines for those countries that have signed on and allowing adoptions to continue from non-Hague countries with only very limited regulation), and outlines 8 holes that need plugging in order to make that happen.
Her article generated a lot of response from adoption experts, and those are accessible: here.