POLITICS 03/18/2010 05:12 am ET | Updated May 25, 2011 Video: World's Tallest Building Debuts MSNBC MSNBC The world's tallest building is opening in Dubai today, and CNBC's Guy Johnson has the latest. (CNBC) Dubai - List of tallest buildings and structures in the world - United Arab Emirates - CNBC - Middle East Read more on MSNBC Do you have information you want to share with HuffPost? Here’s how. MORE: Dubai United Arab Emirates United Arab Emirates Subscribe to the Politics email. How will Trump’s administration impact you?