First lady Michelle Obama shakes hands with Saudi king.

President Barack Obama and first lady Michelle Obama made a quick stop in Saudi Arabia on Tuesday to pay respects to the late King Abdullah, and to hold meetings with the new leader, King Salman bin Abdulaziz. But one aspect of the encounter stood out to reporters covering the receiving line at the palace: the first lady shook hands with the king. Islamic law generally forbids men from touching women to whom they are not related. However, that rule is often times overlooked when official diplomatic delegations visit the kingdom. The White House notes that representatives of the United States, including former Secretaries of State Hillary Clinton and Madeleine Albright, along with German Chancellor Angela Merkel have all visited the Saudi king, and have all shaken hands with members of the Saudi royal family.