An Italian soldier has been killed and four others wounded after a bomb blew up their vehicle in southern Iraq.The attack comes just weeks after three Italian troops were killed by a roadside bomb. The army said one of the soldiers wounded in yesterday’s attack sustained serious injuries. The troops were part of a convoy escorting British logistics vehicles. They were about 100 kilometres from their base in the southeastern city of Nassiriya when the bomb went off. Italy’s Prime Minister Romano Prodi wants to keep his recent election promise for a swift withdrawal of his country’s 2,600 troops stationed in Iraq. His timetable for withdrawal is to be discussed by his cabinet in the coming weeks. Prodi’s predecessor Silvio Berlusconi had planned to bring the Iraq mission to a close by the end of this year. The current government is expected to bring that deadline forward.