Saudi Arabia’s King Salman has been meeting US President Barack Obama in Washington, with Iran and Yemen topping the agenda.<br /><br /> It is the king’s first visit to America since ascending to the throne in January and comes after a nuclear deal was agreed with Tehran.<br /><br /> There are Gulf Arab fears that a lifting of sanctions will enable the Islamic Republic to pursue destabilising policies in the Middle East. <br /><br /> As the two met, protesters gathered outside the White House to voice their views over the turmoil in Yemen.<br /><br /> There have been tensions between the US and Saudi Arabia over what Riyadh sees as a lack of direct US action against President Bashar al-Assad in Syria.<br /><br /> A perceived American tilt towards Iran since the Arab Spring uprisings has also been straining relations.
