A resolution in favour of the full membership of a Palestinian state in the United Nations has failed in the UN Security Council due to a veto by the United States. Twelve member states voted in favour of the resolution in New York on Thursday, with Switzerland and Britain abstaining. The veto by the US, which is a permanent member of the most powerful UN body, meant that the draft resolution failed to be adopted. In early April, Palestinian UN Ambassador Riyad Mansour wrote a letter to UN chief António Guterres asking for the motion, which had already been tabled in 2011 but failed to be adop…