Iraq was no threat to us before the invasion, but it has become a critical threat as a direct result of the invasion.

And, taken together, I believe they pose a critical threat to this country's security.

Americans hardly remember when the Reagan Administration called the leftist rebels a critical threat to our national security.

The most critical threat to the survival of the foreigners came in early July.

This has now become a site of wastewater disposal and facing a critical threat for its sustenance.

I failed to see a critical threat to our security.

The animal faces a variety of critical threats.

These files are then detected by the software and listed as critical threats requiring immediate removal.

The most critical threat facing threatened birds is the destruction and fragmentation of habitat.

Scientists have said that the declining of amphibians is one of the most critical threats to global biodiversity.