Russia digs in on Ukraine never joining NATO, on a day of talks with ...

U.S. Deputy Secretary of State Wendy Sherman (left) and Russian deputy Foreign Minister Sergei Ryabkov (right) pose for pictures as they attend security talks on soaring tensions over Ukraine, at the U.S. permanent Mission, in Geneva on Jan. 10. U.S. Deputy Secretary of State Wendy Sherman (left) and Russian deputy Foreign Minister Sergei Ryabkov (right) pose for pictures as they attend security talks on soaring tensions over Ukraine, at the U.S. permanent Mission, in Geneva on Jan. 10.The idea that Ukraine, Russia's neighbor, might someday join NATO "is one of the areas where we have the greatest difference of views with the U.S.," Russian Deputy Foreign Minister Sergei Ryabkov said on Monday, after an hours-long discussion with his U.S. counterpart, Deputy Secretary of State Wendy Sherman.Sherman and Ryabkov posed together at the start of the session, convened as an effort to ease tensions aroused by Russia's positioning of some 100,000 troops along its border with Ukraine.