Russian President Vladimir Putin and Saudi Arabia’s Crown Prince Mohammed bin Salman spoke about the oil market in a telephone conversation on Thursday, the Kremlin said. The call comes less than a week after Saudi Arabia’s de facto ruler met visiting US President Joe Biden. Putin and Prince Mohammed discussed “in detail the situation on the international oil market. They stressed the importance of reinforcing cooperation in OPEC+,” the Kremlin said in a statement. The Saudi-led OPEC oil cartel has been cooperating with a number of other oil-exporting nations including Russia for several years to better control the oil market. The group, called OPEC+, introduced production cuts during the coronavirus pandemic that helped the oil market to recover from a crash in prices to below zero. OPEC+ nations have been gradually unwinding those cuts, but the end of Covid restrictions in most countries has seen demand rebound. With Russia’s military operation in Ukraine also triggering supply worries, oil prices have jumped briefly above $120 per barrel this year. The Kremlin statement said Putin and Prince Mohammed noted with satisfaction that the cooperation by OPEC+ members had made it possible “to maintain the needed balance and stability on the global energy market”. The call comes as global energy markets have been marked by volatility as traders swing between concerns about supply and worries that a global recession will crush demand. The International Energy Agency warned last week that the oil supply may not keep up with demand next year. According to the Kremlin, Putin also discussed the summit earlier this week in Tehran that brought together the Iranian, Russian, and Turkish leaders — three countries that have been involved in the Syrian conflict that erupted in 2011.