US dollars <a href=" https://www.bathales.com/buy-tetracycline-online.pdf#blake ">where can i buy tetracycline for acne</a> It is hard to overstate Hammarskjold&rsquo;s contributions. In two quite separate areas, personal integrity and breadth of intellect, he may well have been unsurpassed by any other leader of the twentieth century. He was elected to head the United Nations in 1953, at a time when the role of the organization was still being shaped. During his eight years in office, he invented the concepts of &ldquo;preventive diplomacy&rdquo; (negotiations to prevent conflict), &ldquo;shuttle diplomacy&rdquo; (negotiations to end a conflict), classical &ldquo;peace-keeping&rdquo; (troops to monitor a cease-fire and implement peace agreements) and a UN &ldquo;political presence&rdquo; in conflict areas (to try to stop conflict from re-erupting).