 South Korean President Roh Moo-hyun walked across the Korean Demilitarized Zone on 2 October 2007 and traveled on to Pyongyang for talks with Kim Jong-il.The two sides reaffirmed the spirit of the 15 June Joint Declaration and had discussions on various issues related to realizing the advancement of South-North relations, peace on the Korean Peninsula, common prosperity of the people and the unification of Korea.On 4 October 2007, South Korean President Roh Moo-hyun and North Korean leader Kim Jong-il signed a peace declaration.