His Highness the Emir Sheikh Tamim bin Hamad al-Thani, His Highness the Deputy Emir Sheikh Abdullah bin Hamad al-Thani and HE the Prime Minister and Interior Minister Sheikh Abdullah bin Nasser bin Khalifa al-Thani yesterday sent a cable of congratulations to Sultan Qaboos bin Saeed of the Sultanate of Oman on the occasion of the anniversary of his accession to the throne.