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After President Obama gave a speech at the United Nations Tuesday to mark the start of an initiative for transparency in government, he joined other leaders for a group photo but must have forgotten for a brief moment that he wasn’t alone.

During one of the photos, which are taken in rapid succession by a group of photographers, the president lifted his hand to wave at the cameras and blocked the man standing on his right, believed to be the president of Mongolia, Tsakhia Elbegdorj.

Some of the other countries joining the Open Government Partnership initiative are Mexico, Indonesia, South Africa, the Philippines and Brazil.