Nuclear security is also a global endeavor. The amount of water a bucket can hold is determined by its shortest plank. The loss of nuclear material in one country can be a threat to the whole world. A concerted, global effort is therefore required to achieve universal nuclear security. We must bring more countries into the international nuclear security process and try to turn it into a global undertaking, so that all will contribute to and benefit from it. We should strengthen exchanges to learn from each other and share experience, and improve coordination between the relevant multilateral mechanisms and initiatives. Although the starting line may be different for different countries, we should make sure that no one falls behind in this common endeavor.