BNP Paribas SA, France's largest bank, is conducting a review of "a significant volume" of U.S. dollar transactions with countries that may face American economic sanctions. The review covers "certain U.S. dollar payments involving countries, persons and entities that could be subject to economic sanctions under U.S. law," the Paris-based bank said in its annual report. The transactions may be "impermissible" under regulations such as those of the Office of Foreign Assets Control, BNP Paribas said.