Ambassador Thomas R. Pickering recently gave a comprehensive interview to the Bulletin of Atomic Scientists in which he touched on arms control issues with an eye toward the situations in Iran, North Korea and Russia. Regarding the current crisis in relations with Russia, he noted, “When the Soviet Union went out of business, they thought there would be no NATO enlargement…And they are still concerned about NATO enlargement and encirclement, especially about the prospect of NATO enlargement to Ukraine.” Read the whole thing here.