Very few countries have reasons to fear for their 'national security', that's mostly just a fig leaf for activities that would otherwise not stand a chance of being implemented.
Countries that have legitimate national security issues (Syria, North Korea, Venezuela, Afghanistan, Iraq, Algeria and so on) are not the ones using that term the most frequent.
Countries that have legitimate national security issues (Syria, North Korea, Venezuela, Afghanistan, Iraq, Algeria and so on) are not the ones using that term the most frequent.