BLACKPINK, United Nations 2015 United Nations Climate Change Conference Ambiassadors commissioned on February 25, 2021 +8 2015 United Nations Climate Change Conference A Year Ago in Winter BLACKPINK Boris Johnson British Embassy Seoul Juhan Ulfsak Korea Rosé United Nations World YouTube 2015 United Nations Climate Change Conference A Year Ago in Winter BLACKPINK Boris Johnson British Embassy Seoul Juhan Ulfsak Korea Rosé United Nations World YouTube