South Korean President Park Geun-hye on Friday asked Russian President Vladimir Putin to work with her to resolve the North Korean nuclear standoff and push for such ambitious joint projets as linking railways of the two nations via the North. Park and Putin met one-on-one after they and other leaders of the world\'s top 20 advanced and emerging economies wrapped up two days of discussions in Russia\'s second-largest city with an agreement to strengthen macroeconomic coordination to help spur the global economy.