The World Council of Churches is like Christianity’s version of the UN. It is an international ecumenical organization based in Geneva, Switzerland. It has a membership of over 340 churches and denominations which claims about 550 millions Christian members throughout the world in more than 120 countries.
In my eyes, the WCC has just about as much credibility as the UN, i.e. ZERO. It has a long record of supporting terrorists. I refer you to a portion of the Wikipedia article on the WCC:
Programme to Combat Racism during the 1970s
There was controversy over the WCC’s Programme to Combat Racism (PCR), the PCR during the 1970s. It funded a number of humanitarian programs of liberation movements while those groups were involved in violent struggle, examples include:
* In 1970, Reader's Digest suggested that the PCR was contributing to fourteen groups involved in revolutionary guerrilla activities, some of which were Communist in ideology and receiving arms from the Soviet Union (Reader's Digest, October 1971). * In 1977 "The Fraudulent Gospel" by Bernard Smith ISBN 0-89601-007-4 was published in the USA and Britain and carried a graphic photo on the front cover of 27 Black Rhodesians it said were "massacred by WCC-financed terrorists in Eastern Rhodesia in December 1976". * Donating $85,000 to the Patriotic Front of Zimbabwe (ZANU) in 1978, months after the group shot down an airliner, killing 38 of the 56 passengers on board. Members are reported to have killed 10 survivors (this was denied by the Front) 
This caused much controversy in the past among member churches. In a Time Magazine article entitled "Going Beyond Charity: Should Christian cash be given to terrorists?” (October 2, 1978). Further examination of WCC’s political programme appeared in Amsterdam to Nairobi - The World Council of Churches and the Third World by Ernest W. Lefever (1979, Georgetown University, ISBN 0-89633-025-7 . Further criticism has also been cited by the Christian right, for example in March 1983 issue of Jerry Falwell related Fundamentalist Journal:
There has been an 'enormous disturbance' in British churches, says one Executive Committee member. As for West Germany — which now provides 42 percent of the budget for the financially pressed WCC — official protests are muted, but one top churchman reports 'bitter reaction in our churches.'… In the U.S., important elements in such WCC member groups as the United Methodist Church, the United Church of Christ and the Greek Orthodox Archdiocese are upset.