NEW YORK — Jonathan M. Winer, the Obama State Department official who acknowledged regularly interfacing with the author of the controversial, largely discredited 35-page anti-Trump dossier, served as senior vice president of a firm that did lobbying work for Tenex, the U.S. subsidiary of Rosatom, the Russian state corporation headquartered in Moscow. In 2010, Rosatom infamously purchased a controlling stake in Uranium One, the Canadian uranium mining company with operations in the U.S. The purchase was approved by the Obama administration in a decision that is currently being probed by the House Permanent Select Committee on Intelligence.