BBC News Online charts the latest developments in the Iraq conflict.
[All times GMT and approximate]
Monday, 31 March
2108: Seven Iraqi civilians - all women or children - are killed by US troops firing on their vehicle after it refused to stop at a check point near Najaf.
2103: British troops move into southern town of al-Zubayr.
1945: President Bush says US will not relent "until Iraq is free".
1935: Iraqi capital rocked by huge explosions.
1918: US Major General Stanley McChrystal says coalition special operations forces have denied the Iraqi regime the opportunity to operate in western Iraq.
1908: The Pentagon says there are more than 300,000 coalition troops in the Gulf area, more than 100,000 inside Iraq.
1541: British troops free two Kenyan civilians held for the past 10 days by Iraqi gunmen in southern Iraq.
1521: US Secretary of State Colin Powell leaves for Europe on Tuesday for a trip taking him to Turkey and Brussels.
1512: The International Committee of the Red Cross says it has visited Iraqi prisoners of war held by US-led forces in the south of the country.
1509: Iraqi Information Minister Mohammed Saeed al-Sahaf says Iraqi forces killed 43 US and UK soldiers in past 36 hours and destroyed 13 coalition tanks
1502: Iraqi television shows footage of President Saddam Hussein meeting top aides, including his two sons. The eldest, Uday, who is charged with defending Baghdad and Tikrit, was making his first televised appearance since the outbreak of the US-led war on Iraq.
1341: US-led forces hold about 8,000 Iraqi prisoners of war, UK Defence Secretary Geoff Hoon tells parliament.
1258: American television channel NBC sacks veteran journalist Peter Arnett for criticising US war plans in an interview with Iraqi state-run television.
1245: Low-flying aircraft target Iraqi presidential palace in Baghdad.
1124: Iraqi Foreign Minister Naji Sabri says 5,000 foreign volunteers have arrived in Baghdad to fight against US-led forces.
1040: A convoy of more than 6,000 US Marines has resumed its push towards Baghdad and is preparing to confront a key unit of the Iraqi Republican Guard, our correspondent says.
1031: Humanitarian aid to Iraq must be accompanied by measures to repair the environmental damage caused by the war, the director of the UN Environment Programme says.
1021: The US military has been launching new air strikes on the city of Nasiriya. Overnight marines said a giant AC130 gunship was used in a strike on an Iraqi security complex.
0930: Iraq's domestic state television resumed broadcasts after a disruption probably caused by bomb damage to the Information Ministry in Baghdad, reports say.
0730: British marines are continuing an operation to clear Iraqi forces from an area to the southeast of Basra. The operation began on Sunday but met strong resistance in some areas.
0627: The British army says it wiped out a significant amount of armour and infantry north of the Rumaila oil fields overnight.
0635: Two UK soldiers killed on Sunday are named by the British Army as Marine CR Maddison, of 40 Commando, and Lance Corporal SA Brierly, with 212 Signals Squadron.
0604: US commanders say the city of Najaf is almost encircled. Overnight B-52 bombers made repeated runs, and there was intense shelling after an attempted break-out by Iraqi troops, our correspondent says.
0543: About 5,000 additional US troops, including special forces, are being sent to the area around Nasiriya in a new effort to defeat Iraqi resistance there, our correspondent says.
0512: Marines moving in to Nasiriya find large quantities of gas masks and anti-nerve gas chemicals in an abandoned Iraqi camp, US Central Command says.
0300: US Secretary of State Colin Powell calls on Syria to stop supporting the Iraqi leadership.
0210: Tomahawk cruise missile targeted the information ministry in Baghdad to "reduce the command and control capabilities" of the Iraqi Government, US Central Command says.
0003: Renewed Baghdad bombing targets area around information ministry, correspondents say.
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