South Korea and Saudi Arabia will sign an agreement on nuclear cooperation during a two-day visit by President Park Geun-Hye that began today, a diplomat said. Official Saudi media confirmed that Park had arrived in Riyadh. We will have some framework agreement on technical cooperation, research and development and the exchange of personnel in the nuclear field, said Jungho Lee, head of the political section at Seoul's embassy. Lee told AFP he expects several other agreements, mostly economic, to be signed between the kingdom and South Korea, Asia is the fourth-largest economy, which imports nearly all of its energy supplies.