The development has been called a major environmental threat by park officials.

Some people may find it difficult to picture him as a major threat to the national interest.

We need, in the face of this major threat, to take direct action right now.

The bonds were a major threat to the company's future.

Old lead paint, they say, is still the major threat to most children.

Such a service had been considered a major threat to the cable television industry.

In fact a one party system could be a major threat to the very existence of our country.

Another major threat to the coalition may come from within.

They aren't exactly what you'd call a major threat to the universe.

The 1981 attempt was the second major threat to his government at that point in time.