Bashar al-Assad: Boris Johnson is 'completely disassociated from reality'

Syrian President Bashar al-Assad has described British Foreign Minister Boris Johnson as being "completely disassociated from reality" after Britain hosted a high profile meeting with Syrian rebels and world leaders in London. 

The HNC, a coalition representing various factions from the Syrian opposition, called for the Syrian president to give up power as part of a political transition to end the five year long civil war. 

The meeting in London was also attended by foreign dignitaries from Saudi Arabia and Turkey.