A group of anti-LGBT organizations, including leading American groups, have banded together to sign a joint platform meant to “push back against UN entities attempting to redefine the family to include same-sex relations.”

C-Fam, a U.S. group that pushes social conservative policies at the UN, says in a press release that it was joined in organizing the platform by the National Organization for Marriage, the Family Research Council and Human Life International. Also among the organizing groups is CitizenGo, an international petition platform that counts NOM president Brian Brown as a member of it board and HazteOir and Derecho a Vivir, two Spanish organizations led by CitizenGo’s president, Ignacio Arsuaga.

The platform states that any reference to the family in UN documents should be interpreted only as “a man and a woman united in marriage, and relations that are equivalent or analogous, including single parent families and multigenerational families.”

It makes clear that this specifically excludes families headed by same-sex couples: “Relations between individuals of the same sex and other social and legal arrangements that are neither equivalent nor analogous to the family are not entitled to the protections singularly reserved for the family in international law and policy.”

The platform concludes that any language that “implicitly or explicitly attempts to dilute, erode, or undermine” this definition of the family is “incompatible with international human rights law.”

Brown, as marriage equality has become entrenched in the U.S., has increasingly worked to form global alliances to prevent the advance of LGBT rights.