KUALA LUMPUR: China will sign up to a Southeast Asian treaty banning nuclear weapons in the region as soon as all documentation is ready, Malaysia's foreign minister said on Thursday (Jul 10). The Southeast Asian Nuclear Weapons Free Zone, or SEANWFZ, has been in force since 1997, limiting the use of nuclear power by members to peaceful purposes, such as power generation. ASEAN's objective is for the world's nuclear powers, including China, the United States, Britain, Russia and France, to sign