"Security justification" refers to providing a valid reason or explanation for implementing measures to protect someone or something from harm or danger. Full definition
«Not based on any national security justification» how does the manufacture of metal used in every piece of military hardware not constitute a matter of national security? (politics.stackexchange.com)
We saw a country whose people have known immense suffering now imposing conditions on their Palestinian neighbours which cause a different but very real suffering and often without real security justification. (itv.com)
«The Trump administration appears to have chosen an unconventional approach to the problem by relying on a national security justification for the imposition of trade relief,» he added. (globaltrademag.com)