Lin stressed that the U.S. is the biggest source of disruption to the international nuclear order and global strategic stability. In the area of arms control, the U.S. simply let the New START treaty expire to the detriment of trust between major countries and global strategic stability. The U.S. clings to the policy of first use of nuclear weapons. The U.S. has spent trillions of dollars to upgrade its nuclear triad, and has been working to build a global anti-missile system and establish forward deployment of strategic assets. The U.S. applies double standards on nuclear non-proliferation. All of those seriously disrupt global strategic balance and stability and undermine international and regional peace and security.