Breadcrumb Home / Resources / Photos / World Post Day: Children Wrote About SDGs to the UN Secretary General - UN Photo World Post Day: Children Wrote About SDGs to the UN Secretary General - UN 09 October 2017 Photo: © UN Montenegro / Radonja Srdanović View Album on Flickr https://www.flickr.com/photos/106991185@N05/albums/72157687114803320