1.   The news was a body blow and for several months the company was on a knife edge.

2.   Wood is also reasonably kind to the knife edge.

3.   But although they are largely self sufficient, needless to say livelihoods in these sort of conditions and communities are on a knife edge.

4.   The bid to obtain Objective One status is understood to be on a knife edge and caution was the order of the day.

5.   Beautiful ideas, elegant ideas and even sacrosanct notions are not immune from termination by the chilling knife edge of experimental data.

6.   All you are doing is aligning the knife edge after daily wear and tear.

7.   But with this shift, vital to U.S. interests, now seems poised on a knife edge.

8.   Congress is balanced on a knife edge between the two parties.

9.   Five years ago, the National Rifle Association was poised on the knife edge of political disaster.

10.   Given the general social tensions, the trouble in Jos and the start of the American military campaign in Afghanistan, Kano found itself on a knife edge.