translation.en: If you roll it forward -- 20th-century security -- into the Second World War, you see the Battle of Stalingrad, 300 days, 2 million people killed.
translation.zh: 咱们继续往前看--20世纪的安全-- 看到二战， 我们看得到在斯大林格勒保卫战， 300天内有二百万人战死。