UN Watch, som monitorerer FNs menneskerettsarbeid, er nektet å overvære Durban III-konferansen som åpner i New York torsdag.
USA og ti andre vestlige land har valgt å boikotte konferansen, som konsentrerer kritikken mot Israel.
88 NGO’er er blitt akkreditert til konferansen, men ikke UN Watch.
U.N. Watch executive director Hillel Neuer said late Wednesday that the U.N. had given no reasons for turning down its application.
It was the first time ever that U.N. Watch had been “barred” from a U.N. meeting, he told CNSNews.com, calling it an “ominous sign that the only U.N. watchdog group is being kept out.”
It was “telling,” Neuer added, that a Gaddafi “front group” was being welcomed.
“It is an embarrassment for the U.N.” he said, adding that U.N. high commissioner for human rights Navi Pillay should speak out.
U.N. Watch has become a thorn in the side of countries on the Human Rights Council that have poor human rights records.
Its representatives have used their brief speaking slots to accuse governments of abuses and hypocrisy – using direct language seldom heard in U.N. chambers – and frequently are interrupted by complaints from delegates of such countries as Cuba and China.
In an unusual but effective tactic, U.N. Watch has at times used its time slot to feature a guest – such as the former commander of British forces in Afghanistan who defended the conduct of Israel’s 2008-9 offensive against Hamas in Gaza; and a Syrian opposition supporter who last month challenged countries like China, Russia and Pakistan by name, asking them how they could justify their “support for a regime that slaughters its own people.”