n. A political philosophy or ideology that sets national security as its highest principle and chief objective.
Other Forms
You may object that libertarian securitarianism is more than a bit of an oxymoron, but that’s the point. We live in a time of conflicting impulses. Our characteristic self-indulgence is the thought that we can have a sustainable society that maxes out both liberty and security.
—Peter Augustine Lawler, “Campus Security,” The Weekly Standard, December 25, 2014
However, Rafsanjani's disqualification was more surprising and the decision to block him confirms that the Islamic Republic has set the priority to a securitarian rule over a theocratic one.
2003 (earliest)
This paper seeks to redress this lacuna and outlines a new geopolitics of ('illegal') immigration that concerns both a rescaling of decision-making (often referred to as ‘communatarisation’ which has been discussed extensively in terms of legal immigration), and a little explored rescaling of control to third countries.

In both cases, the evidence of 'securitarianism' is strong.
—Michael Samers, “An emerging geopolitics of illegal immigration in the European Union” (PDF), European Journal of Migration and Law, February 18, 2003
Analyses of these texts and the discourses produced by the security agencies and politicians reveal that immigration is more likely to be constructed as a securitarian issue.
—Ayse Ceyhan, “'Migrants as a Threat': A Comparative Analysis of Securitarian Rhetoric” (PDF), ECSA 5th Biennial International Conference, May 29, 1997