This is a difficult problem.

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And this is a very, very difficult problem -- there is no question -- and it has been a problem that previous Presidents have worked to resolve.

WHITEHOUSE: Press Briefing

Mr. ZOELLICK: This is a devil of a difficult problem.

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And they have a tremendous amount of capacity of resources to deal with this very difficult problem, but it is a crisis significant enough that a lot of countries, including the United States, led by the United States, have come in to offer further aid and assistance and expertise to help them deal with it.

WHITEHOUSE: Press Briefing

There is definitely a small grey area in which it is difficult to spot patients with this problem.

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From my perspective, this is a simple problem that has very complicated politics and emotion that make it difficult to make progress.

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In the long term, this shallowness of support is an enormous problem for the regime, a challenge that will be extremely difficult to solve.

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"This is not an ideal solution, " he says, to what he considers a "devilishly difficult" problem.

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