While Iraq continues to face significant challenges it is a middle income country with huge potential.

Parents of children with disabilities also face significant financial challenges.

But getting them to do so in a recession is a significant challenge.

"It will leave them with a significant challenge, to imagine America without freedom."

You will have to find your own way through, and it might turn out to be a significant challenge.

The company has yet to turn a profit and could face significant legal challenges.

"New York can represent significant challenges from a life style point of view," he said.

At the same time, it faces a number of significant challenges.

"It pointed out that there were significant challenges to all levels of government."

The series attempts to identify the Earth's most significant environmental challenges.