Dubai renamed the world’s tallest building in honor of the ruler of Abu Dhabi less than a month after receiving a $10bn lifeline from the neighbouring emirate that defused a financial crisis.

The 200-story Burj Khalifa, or Khalifa Tower, was known until yesterday as Burj Dubai. Sheikh Khalifa Bin Zayed Al Nahyan, who has ruled Abu Dhabi since 2004, is also president of the United Arab Emirates.