A logical sequence for presenting the statement would be:

Magnitude, frequency, and distribution: Affected geographical areas and population groups affected by the problem.
Probable causes of the problem: What is the current knowledge of the problem and its causes? Is there agreement? Is there controversy?
Possible solutions: In what ways have solutions to the problem been attempted? What has been proposed? What are the results?
Unanswered questions: What remains to be answered? What areas have not been possible to understand, determine, verify, or test?