MOSCOW – On a landmark visit to Russia, Saudi Arabia's King Salman bin Abdul-Aziz al-Saud Salman and President Vladimir Putin were set on Thursday to clinch a host of multibillion-dollar energy and defense deals despite discord over the Syrian war. The first official trip to Russia by a Saudi monarch will also see the leaders of the world's largest energy exporters discuss an extension of an OPEC agreement to cap oil output. "This is the first visit by a Saudi Arabian monarch in the history of our relations and that in itself is a landmark event," Putin said as he welcomed King Salman to Moscow in an ornate gilded Kremlin hall. "I'm sure your visit will boost the ties between our countries," he said. "We aim to strengthen our relations in the interests of peace and security, in the interests of developing the world economy," the Saudi king responded.