Hosting the king for breakfast at the Naval Observatory, the official residence of the vice president, Biden discussed with him how to advance the political transition to "a peaceful, democratic post-Assad Syria," said the White House.

　　During the meeting, Biden also underscored the strength of the U.S.-Jordanian relationship, and reiterated the enduring U.S. support for Jordan, the statement added.

　　President Barack Obama will meet with King Abdullah II on Friday at the White House to discuss "Jordan's political and economic reforms, the humanitarian crisis in Syria, and additional regional issues of mutual concern," according to a previous White House statement.

　　Several leaders from the Middle East have recently visited or will visit Washington for talks with the U.S. president. Obama just met with Amir of Qatar Sheikh Hamad Bin Khalifa Al-Thani at the White House on Tuesday. He is also expected to meet with Turkish Prime Minister Recep Tayyip Erdogan at the White House on May 16.