Gazprom's CEO Alexei Miller said after the talks between President's Lee and Dmitry Medvedev that the exact delivery route hasn't been determined, but that shipments could begin as early as 2015. The attempt to secure North Korea's consent to build a pipeline on its territory comes as six-nation talks aimed at disarming the country's nuclear capabilities have stalled. South Korea will seek guaranteed Russian gas supplies, whether the fuel is delivered via pipeline or otherwise, according to Mr Lee Jae Hoon, vice minister for trade and energy. "Russia suggested a pipeline via North Korea, which is expected to be more economical than other possible routes," the minister said in a news briefing. "Russia will contact the North to discuss this."