SANAA, June 15, 2016 (Xinhua) -- Yemeni children participate in a protest against the United Nations for removing the Saudi-led coalition from UN's blacklist of committing violations against children, outside the UN main office in Sanaa, Yemen, on June 15, 2016. UN Secretary-General Ban Ki-moon said recently that he had to remove temporarily Saudi-led coalition from UN's blacklist of committing violations against children due to "undue pressure." (Xinhua/Hani Ali)