The head of the Organisation for the Prohibition of Chemical Weapons (OPCW), a global non-proliferation agency, will meet Syrian officials in Damascus on Saturday, three sources familiar with the visit told Reuters. Director General Fernando Arias was expected to meet interim President Ahmed al-Sharaa and Foreign Minister Asaad Hassan al-Shibani, two of the sources said, in a sign of Syrian willingness to cooperate with the agency after years of strained relations under now-toppled leader Bashar al-Assad.