Saudi Arabia's King Salman makes historic visit to Russia
Russian President Vladimir Putin and Saudi Arabia's King Salman have opened talks at the Kremlin in the first official visit of a Saudi monarch to Russia.
The king's talks with Putin on Thursday are expected to focus on the global oil market and the conflict in Syria.
Relations between the two countries have often been strained. During Cold War times, the Saudis helped arm Afghan rebels fighting against the Soviet invasion.
The kingdom, much like Russia, has been hit by a fall in oil prices in recent years. Despite regional disagreements, the two countries found common ground on energy policy in November when they led a deal between OPEC and non-OPEC states to cut production in a bid to shore up crude prices.