A sustainable solution is lost under a short term free for all.

I think this is the only sustainable solution in the long term.

A sustainable solution is much more than one small country can achieve alone.

Military solutions alone can never lead to a sustainable solution.

Do you see any sustainable solutions for solving these and other problems?

"We think this is a sustainable solution to get people in houses," he said.

What Europe needs is a sustainable solution to its transport problems.

This is a sensitive subject to which no sustainable solution has yet been found.

As political leaders it is our duty to offer every individual the hope of a sustainable solution to these problems.

This is why I believe that we need sustainable solutions in the energy sector.