This has been the main focus of the biennial Nuclear Security Summit, which began in 2010 with 47 countries and three international organizations. But the NSS has so far restricted its scope to protecting nuclear infrastructure and material from active misuse.
这就是两年一度的核安全峰会（Nuclear Security Summit）的主要关注点。核安全峰会始于2010年，有47个国家和三个国际组织参与。但到目前为止核安全峰会一直将其范畴限定在保护核基础设施和材料免受活跃的滥用（active misuse）。将核安全定义得如此狭窄是值得担忧的。