The U.S.–China Strategic and Economic Dialogue (S&ED) (simplified Chinese: 中美战略与经济对话; traditional Chinese: 中美戰略與經濟對話; pinyin: Zhōng Měi zhànlüè yǔ jīngjì duìhuà) is a high-level dialogue for the United States and China to discuss a wide range of regional and global strategic and economic issues between both countries. The establishment of the S&ED was announced on April 1, 2009, by U.S. President Barack Obama and Chinese President Hu Jintao. The upgraded mechanism replaced the former Senior Dialogue and Strategic Economic Dialogue started under the George W. Bush administration. The format is such that high-level representatives of both countries and their delegations will meet annually at capitals alternating between the two countries.