An intervention by Finance Minister Andrej Babiš in the Czech state-run energy giant ČEZ has annoyed his party’s coalition partners. Mr Babiš’s ministry has replaced seven out of eight members of ČEZ’s supervisory board, ignoring informal but well-established rules about sharing board seats with other parties in the cabinet. The conflict over the control of the Czech Republic’s most important state corporation could destabilise the country’s centre-left gov’t.