Saudi Arabia's King Abdullah bin Abdulaziz passed ago at away between for in into of on to up early Friday morning. The king was the world's oldest leader. He was 90 years old. He was ago at away between for in into of on to up hospital a few weeks ago at away between for in into of on to up with a lung infection. His 79-year-old half-brother Salman has become the new king ago at away between for in into of on to up the kingdom. World leaders have been quick to pay their respects ago at away between for in into of on to up the late King Abdullah. US President Barack Obama passed ago at away between for in into of on to up his sympathies. He said the king was a good friend ago at away between for in into of on to up the USA. Obama also said the king did a lot ago at away between for in into of on to up peace and stability ago at away between for in into of on to up the Middle East. The British Prime Minister David Cameron said Abdullah would be remembered ago at away between for in into of on to up his, "commitment to peace and ago at away between for in into of on to up strengthening understanding ago at away between for in into of on to up faiths". King Abdullah was born ago at away between for in into of on to up 1 August 1924. He was the thirteenth son ago at away between for in into of on to up former King Abdulaziz. He grew ago at away between for in into of on to up in the royal palaces and worked ago at away between for in into of on to up various positions that would one day prepare him to be king. In 1961 he became mayor ago at away between for in into of on to up Mecca. This was his first job ago at away between for in into of on to up public office. In 1963, Abdullah was made commander ago at away between for in into of on to up the Saudi Arabia National Guard (SANG). He changed the SANG ago at away between for in into of on to up a modern army. He became King of Saudi Arabia and Custodian of the Two Holy Mosques in 2005. News agencies are reporting that Abdullah was a careful reformer ago at away between for in into of on to up home. He allowed women to join the kingdom's parliament. The BBC said that he "hinted that more women should be allowed to work".