I was very concerned about them breaking out [south] into Pakistan, because I knew, if they did that, containing this thing would be a significant problem.

我很担心他们会(从南边)突围到巴基斯坦，因为我知道如果他们做到这点的话，问题会变得一发不可收拾。

youdao

I was very concerned about them breaking out [south] into Pakistan, because I knew, if they did that, containing this thing would be a significant problem.

我很担心他们会(从南边)突围到巴基斯坦，因为我知道如果他们做到这点的话，问题会变得一发不可收拾。

youdao