Russian President Vladimir Putin (L) and Prince Salman bin Abdul Aziz, governor of Riyadh and Saudi King’s brother (R) hold swords during a visit to the King Abdul Aziz Historical Centre in Riyadh

Saudi Arabia's King Salman left Moscow on Sunday, ending his historic trip to Russia, and headed to Riyadh,

Russian President Vladimir Putin hosted King Salman for talks at the Kremlin on Thursday, cementing a relationship that is pivotal for world oil prices and could decide the outcome of the conflict in Syria.

King Salman, the first sitting Saudi monarch ever to visit Russia, led a delegation to Moscow that agreed joint investment deals worth several billion dollars, providing much-needed investment for a Russian economy battered by low oil prices and Western sanctions.

source: Alarabiya