A leadership change at Opec is unlikely to affect the group’s oil production or policies in the coming months, but replacing the late Mohammad Sanusi Barkindo’s moderating influence and diplomatic skills will not come easy in an era of increasingly complex geopolitics.

While Opec kingpin Saudi Arabia continues to wield enormous influence in the group, Barkindo’s role as secretary general was crucial in terms of co-ordinating policy among member countries and the larger Opec+ group, which also includes Russia.

Barkindo, who died on 5 July, was the driving force behind the historic Declaration of Co-operation in 2016 that witnessed unprecedented co-operation between Opec and 11 non-Opec (now 10) member nations, aimed at stabilising the global oil market.