Along Russia’s remote Arctic coast last month, Igor Sechin stood beside a waiting tanker in the freezing cold with a message for Vladimir Putin: After years of construction, the country’s next great oil frontier was finally coming to life.

Saudi Arabia is in talks with foreign governments to give state-owned Aramco access to their strategic oil storage, as the kingdom seeks to make its supplies to customers more resilient during disruptions, Chief Executive Officer Amin Nasser said.