premise: The supreme commander conceded that he was concerned over the national security after the political gatherings ban was lifted.
  "Regarding the security issue, I must take care of it all the time. No matter in the past or present we can't forget about security," Boonsang said. "National security is the same as oxygen. When we're well, we don't think about it. But when we have trouble or lack oxygen, we realize that we badly need it."
  As for the lifting of martial law imposed throughout the kingdom since the September 19 coup, Boonsang said he could not give a specific time when it will be revoked since the matter must be discussed and decided by various parties.
   What cause the people to realize they need oxygen in the supreme commander's analogy?
hypothesis: political gatherings ban was lifted