Original sentence: This has been a constant cause of friction between the General Assembly  and the Security Council which has a record of veto'd resolutions on this subject caused by US application of its veto in what critics have claimed is a partisan way (see United States and the United Nations)
Edited sentence: (see United States and the United Nations).This has been a constant cause of friction between the General Assembly (dominated by undemocratic states) and the Security Council which has a record of veto'd resolutions on this subject caused by US application of its veto in what critics have claimed is a partisan way, although in reality, the resolutions passed against Israel are one-sided and completely unjust