Mubadala Petroleum and Petrochemicals head Musabbeh Al Kaabi is bullish on the US shale gas boom. Pawan Singh / The National
Mubadala Petroleum and Petrochemicals head Musabbeh Al Kaabi is bullish on the US shale gas boom. Pawan Singh / The National

Mubadala says it will decide on Pakistan's $6bn refinery in 2021