In a war, all resources of the society may be diverted to serve the national survival.

Today, it is hard for any of us to comprehend such a threat to our national survival.

Is this really what's needed for national survival?

According to a British government document they are intended to be limited to "lines vital to the prosecution of war and to national survival".

They are instruments for national survival and should be woven into the whole fabric of the primary school curriculum.

She continued, "That man deals with issues of global importance and national survival every day.

Of course not, but he faced a genuine threat to national survival.

They celebrated a remarkable military victory and national survival.

So long as that threat remains, a security law must remain in effect for national survival.

Did we threaten your economic security, your very national survival?