ðɪs mˈɑːɹkɪŋ ɪz jˈuːzd fɔːɹ ˌɪnfɚmˈeɪʃən hˌuːz sˈaɪdɪfˈɛkts mˈeɪ biː lˈaɪfθɹˈɛʔn̩ɪŋ, dɪsɹˈʌptɪv tə pˈʌblɪk ˈɔːɹdɚ ɔːɹ dˌɛtɹɪmˈɛntəl tə dˌɪpləmˈæɾɪk ɹᵻlˈeɪʃənz wɪð fɹˈɛndli nˈeɪʃənz.
This marking is used for information whose side-effects may be life-threatening, disruptive to public order or detrimental to diplomatic relations with friendly nations.