Foreign countries are not the only partners, said Under Secretary Stengel

而许多外国不仅是合作伙伴，斯坦格尔说。

Mr. Stengel says the center hopes to " take offline" those who are using social media to recruit new members for IS.

斯坦格尔说，该中心希望使那些使用社交媒体为IS招募新成员的人“下线”。