Indubitably, the 15-member Security Council (UNSC) has become increasingly powerful in the post-Cold War/post-1989 sole-superpower era. The UN Charter endows it with “primary responsibility for the maintenance of international peace and security”. This is precisely why in 2014, Prof. Anthony F. Lang, called for exploring the UNSC’s role in promoting global constitutionalism post-1989, whose ‘epitome’ is the ‘written Western liberal constitution’ (WLC). Given the WLC’s salience, it can be logically inferred that analyzing the UNSC’s role in promoting global constitutionalism necessitates commencing with its WLC-promotion. But however, Lang himself, missed the UNSC’s WLC-promotion and, by extension, its famed property rights. My paper explores this topic. It shows how the UNSC’s Constitution-promotion (1988-2021) in poor Third World states has lent their transitional justice not a social justice orientation but a market one.