The phrase "as the key problem" is correct and usable in written English.
It can be used when identifying or emphasizing a primary issue or challenge in a discussion or analysis.
Example: "In our analysis of the project's failures, we identified communication breakdowns as the key problem that hindered progress."
Alternatives: "as the main issue" or "as the primary concern".
Lax and Sebenius describe what they call, "the negotiator's dilemma" as the key problem facing everyone in a consensus building or dispute resolution process.
Officials point to "training and compliance" gaps, rather than proper reporting procedures, as the key problem in the submission of criminal information.
In the face of such practice, critics see the shift towards more public funding of faith groups as the key problem.
What's more, the company sees lack of demand as the key problem — a lack of demand that is partly due to the drive to repeal or modify Obamacare, not to the implementation of the law itself.
And, crucially, Photos would lean on Google's famed A.I. to address what it saw as the key problem of the smartphone era — the fact that we all take photos but rarely look at them.
Although promising, the initial results using common organic solvents indicated low conversion of 1a or low selectivity towards 3aa and analysis of the reaction mixtures identified insufficient imine reduction as the key problem.
As we know the key problem of the adaptive finite element method is the a posteriori error estimate.
As a result, the key problem is to be built to minimize the payment of the source node under the constraints of ( {R}_sge {R}_s^0 ).
But the key problem here, as everywhere else, is Americans' love of their cars.
Environmentalists frequently viewed the key problem as conserving and protecting natural resources, to which agriculture naturally was often, and remains often, a threat.
Everton's pre-season optimism – fuelled by two defeats in 24 league outings up to May – has vanished with another poor start and the Scot identifies the key problem as a toothless attack, with only six goals in seven matches.
