On 25 November 1935 British officials met with Ibn Saud in an attempt to finalise a frontier between the new kingdom and its coastal protectorates, including Oman, which was ruled by an independent sultan under heavy British influence.[8][2] The conference proved abortive however and the issue remained unresolved.[9][10] In 1955, following the an attempt by Saudi Arabia to assert its control over the Buraimi Oasis on the Oman-UAE border, Britain stated that it would unilaterally use a slightly modified version of the 1935 'Riyadh line' henceforth.[11]