Student or Learner
Unlike the Arab group's call in March for a no-fly zone over Libya, which set the stage for the NATO action that helped topple Muammar Gaddafi, Saturday's surprisingly tough measures did not include a request for the use of force.
More:ANALYSIS-Arab moves isolate Assad, West intervention unlikely | Reuters
Can I replace the article "a" in the sentence above by "any"?
Is there any difference in meaning between them?