The entire affair illustrates the difficulty of determining what resources and knowledge an attacker might actually have.

Instead, it illustrates the difficulty of executing a deal in the sector.

The music video illustrates the difficulty of reconciling love and friendship.

They also illustrate the difficulty of making sure that people who should not be vaccinated avoid it.

It illustrates the difficulty of such studies, and also suggests some broad conclusions.

Johnson & Johnson's setback illustrates the difficulty of selling medical tests for home use.

Let me illustrate the difficulty with three simple examples.

That illustrates the difficulty of the problem, but also the president's determination to keep attacking it.

The bill illustrated the difficulty the president will have this year in holding down spending on popular programs.

He drew an automotive analogy to illustrate the difficulty of the job.