Stalled assault on Basra exposes the Iraqi government's shaky authority

Instead of being a show of strength, the government's stalled assault is demonstrating its shaky authority over much of Baghdad and southern Iraq. As the situation spins out of Mr Maliki's control, saboteurs blew up one of the two main oil export pipelines near Basra, cutting by a third crude exports from the oilfields around the city. The international price of oil jumped immediately by $1 a barrel before falling back.

In Baghdad, tens of thousands of supporters of Mr Sadr, whose base of support is the Shia poor, marched through the streets shouting slogans demanding that Mr Maliki's government be overthrown. "We demand the downfall of the Maliki government," said one of the marchers, Hussein Abu Ali. "It does not represent the people. It represents Bush and Cheney."