North and South Korea have officially launched construction projects to restore road and rail links severed since the end of the Korean War nearly a half century ago. Ceremonies were held Wednesday at sites on both sides of the Demilitarized Zone, which divides the Korean Peninsula. The aim of the rail and road projects is to promote cross-border trade and exchanges. Technically, the two Koreas are still at war because that conflict ended in a truce. However, if all goes according to plan some routes could be operational by the end of this year, a crucial first leg of what Seoul hopes will become an "Iron Silk Road." This would link the 70 million people on the Korean peninsula with Europe across the railways of China and Russia.