Malcolm Turnbull sworn in as new Australia Prime minister.

New Australian Prime Minister Malcolm Turnbull has promised to focus on stability and improving a faltering economy as the public woke up to their fourth leader in two years.

Turnbull was sworn in as Australia’s 29th prime minister on Tuesday after a surprise ballot of his conservative Liberal Party colleagues voted 54-44 on Monday night to replace Tony Abbott only two years after he was elected.

Turnbull’s elevation has cemented a culture of disposable leaders as the new norm in Australian politics since the 11-year tenure of Prime Minister John Howard ended in 2007.