And as respects sharing the 'ideals of the UN' you are overlooking one little thing.
Even the 1996 resolution by the ECOSOC concerning an ECOSOC NGO’s support of the UN makes the following statement about that type of NGO (remember, the Society was not an ECOSOC NGO):
“3. The organization shall
undertake to support the work of the United Nations and to promote knowledge of its principles and activities,
in accordance with its own aims and purposes and the nature and scope of its competence and activities.”
Note that even an ECOSOC NGO, which is in a consultative relationship with the UN, isn't even obligated to support all the work of the UN. It says its support must be “in accordance with its own aims and purposes”. This means that the particular ECOSOC NGO would not support all the aims of the UN, but only those “aims and purposes” in the “scope of its competence and activities.”
In the case of Jehovah's Witnesses, those ‘aims and purposes’ would be in the field of religious freedom and human rights. That is the “scope of its competence and activities.” There is certainly nothing wrong with supporting that type of work and using whatever avenues are available for assistance. Further, if this qualified definition of “support” applied to the consultative-status ECOSOC NGO's, how much more qualified the definition of “support” must be to the DPI NGOs which enjoy no such status.
Of course, one of the main interests of the UN is human rights. If the UN wants to come to the aid of brothers being persecuted for their religious beliefs, should we not support that? The UN has not yet attacked God's people and proved itself to be an enemy of God. Did not Paul appeal to Rome when he was being persecuted? Yes — did he not use the legal system of a government which later proved to be the foretold “disgusting thing”, to advance true worship?