 Conflict continued periodically until 1967 when Egyptian troops were withdrawn.By 1968, following a final royalist siege of Sana'a, most of the opposing leaders reached a reconciliation and Saudi Arabia recognized the Republic in 1970.British interests in the area which would later become South Yemen, began to grow when in 1839, British East India Company forces captured the port of Aden, to provide a coaling station for ships en route to India.