[4] He was part of the hard-line Serbian nationalist wing of the Socialist People's Party and was expelled in 2005 following disagreements with its moderate leader Predrag Bulatović.

[2] His father Živko Žižić fought for the Yugoslav Partisans in World War II and was a pre-war member of the Communist Party of Yugoslavia.

[2][6] After Momir Bulatović's split with the DPS, Žižić followed him and was elected vice president of the newly formed Socialist People's Party of Montenegro (SNP) in 1998.

[2] He became Prime Minister of the Federal Republic of Yugoslavia on 4 November 2000 shortly after the overthrow of Slobodan Milošević, when the Bulatović cabinet collapsed.

[4] He left the position on 24 July 2001 when a new cabinet was formed following the 2001 Montenegrin parliamentary election, led by his party colleague Dragiša Pešić.

This culminated in January 2005 with the founding of the Movement for the Joint European State Union of Serbia and Montenegro, which grouped together several Serbian nationalist parties and pro-union moderates.