Former Ministers of Justice Daizo Nozawa, president of the Japan–Korea Tunnel Research Institute, and Kim Ki-Chun, a former executive member of the Korea-Japan Parliamentarians Union, have been significant supporters of the project, saying: "any engineering challenges [to building the tunnel] can be met with present technology." They cautioned, however, that "Far more daunting is the historic psychological barrier between the two countries. There is no better way to bring people together than to engage them in a project requiring all their efforts."[6]