BBC News Online charts the latest developments in the Iraq conflict.
[All times GMT and approximate]
Tuesday, 25 March
2250: US forces report they have have killed up to 300 Iraqis after coming under attack near the city of Najaf, south of Baghdad.
2100: Iraqi state television broadcasts halt for 15 minutes, before returning on air with weaker signal, indicating back-up systems are being used, BBC correspondent in Baghdad says.
2100: UK defence officials reveal two UK soldiers killed in friendly fire incident near Iraqi town of Basra on Monday night. Two more are said to be seriously injured.
2020: Renewed bombardment of Baghdad reported by correspondents in the Iraqi capital.
1946: Iraq's main Shia Muslim opposition group, the Tehran-based Supreme Council of the Islamic Revolution in Iraq, says it can confirm a popular rebellion among the Shia population of Basra. Saddam Hussein's regime is dominated by members of the Sunni Muslim faith.
1944: Emergency meeting of United Nations Security Council to discuss the war in Iraq will be held on Wednesday, the council's current president, Mamady Traore of Guinea, announces.
1930: Iraqi Information Minister Mohammed Saeed Sahaf denies any uprising against the authorities in Basra, in a statement to al-Jazeera television.
1834: US Defence Secretary Donald Rumsfeld says the military campaign could grow more dangerous.
1718: UK military officials say there appears to be some kind of uprising in Basra. A British journalist stationed with troops near the southern city says there are reports of Iraqi soldiers shooting at civilians protesting against Saddam Hussein's regime.
1630: The BBC's Andrew North in Nasiriya says he found Iraqi weapons, uniforms and chemical protection suits in a hospital in Nasiriya. US marines who took control of the complex said they had also come under fire from soldiers at the hospital.
1558: Military officials say a US F-16 fighter jet shot at a Patriot missile defence battery near Najaf in central Iraq in a "friendly fire" incident; no injuries are reported.
1533: US President George W Bush confirms he has asked Congress for $74.7bn in extra funds to pay for the war.
1513: Saudi Foreign Minister Prince Saud al-Faisal says the kingdom has proposed a peace plan to end the conflict in Iraq, but has not yet had a response from the US.
1508: UK International Development Secretary Clare Short tells BBC World Service that a further £30m ($47.2m) is being allocated for humanitarian aid in Iraq.
1433: General Renuart says "terrorist-like" cells are responsible for the resistance in Basra.
1414: Major-General Victor Renuart of US Central Command says US forces are "on track" despite the bad weather. He says 1,400 air sorties against the Iraqi Republican Guard are scheduled for Tuesday.
1352: Kuwait announces that an Iraqi missile has been shot down in its airspace.
1351: The US Fifth Fleet in the Gulf raises its alert level amid fears of suicide attacks from Iraqis using speedboats.
1339: A light but steady stream of Iraqi defectors continues to arrive in the Kurdish-controlled areas of northern Iraq, reports the BBC's John Simpson from the region.
1320: About 500 Iraqis have been killed in the last two days by US forces in the south of Iraq, according to Command Sergeant-Major Kenneth Preston, who oversees the US 3rd Infantry Division.
1319: US General Myers says sandstorms will delay advance to Baghdad.
1255: Bombing continues during afternoon on southern outskirts of Baghdad, as blinding sandstorm whips across the city, the BBC's Paul Wood reports.
1240: US Chairman of the Joint
Chiefs of Staff Air Force General Richard Myers tells American television that he believes the toughest fighting in the war with Iraq is still ahead.
1235: Iraqi television broadcasts a message, allegedly from Saddam Hussein, to tribal chiefs urging them to "escalate and enhance" their fighting against the "aggressors".
1215: UK Prime Minister Tony Blair says "huge amount" achieved in Iraq but the campaign will take time and perseverance amid Iraqi resistance. He pledges that "this time" the West will not let the Iraqi people down.
1125: Bodies of at least 30 Iraqis seen along the road from key town of Nasiriya.
1055: US and British attacks have killed 16
Iraqis and wounded 95 over the past 24 hours, Iraqi Information Minister Mohammed Saeed al-Sahaf says.
1050: The Information Minister says Iraqi forces killed what he called "scores of invaders" in marshes near Nasiriya but he gives no precise numbers; such figures have not been confirmed by US or British sources.
1050: Iraqi Information Minister Mohammed Saeed Sahaf denies that Russia has given Iraq military equipment.
1010: Brigadier Jim Dutton of the British Royal Marines says the southern port of Umm Qasr is now "safe and open"; hopes the first aid ship will arrive in 48 hours.
1000: Iraqi Vice-President Taha Yassin
Ramadan criticises Arab countries which supply the United States and Britain with oil.
0845: Iraqi officials say they have delivered food and medicine supplies for six months across the country, but accuse the US and UK of preventing supplies paid for under the oil-for-food programme from reaching Iraq.
0825: A convoy of US Marines crosses the Euphrates river at Nasiriya to advance north, after meeting stiff Iraqi resistance.
0740: A British soldier from the 1st Battalion The Black Watch has been killed in action in an operation near al-Zubayr in southern Iraq, UK military officials say.
0730: South Korean parliament postpones until next month a vote on sending non-combat troops to Iraq.
0635: British military commanders say status of Basra has changed and the city is now a military objective in order to get humanitarian aid through.
0620: Substantial numbers of US forces are now passing through Nasiriya, the BBC's Andrew North reports, although the area is still not totally secure.
0550: The first British soldier killed in action in Iraq is named by the Ministry of Defence as Sergeant Steven Mark Roberts of the 2nd Royal Tank Regiment.
0525: A sandstorm blows in over US troops advancing on Baghdad, reducing visibility and hampering operations.
0505: Reuters correspondent in Baghdad reports distant explosions to the south of the city, as coalition forces move towards the capital.
0455: British Royal Marines move into positions along the Iraqi border with Iran.
0342: American TV networks claim intelligence sources tell them that troops around Baghdad could be authorised to use chemical weapons if other means of defence appear to be failing, reports the BBC's Justin Webb in Washington.
0335: The BBC's Pentagon correspondent Nick Childs reports that the ground attack on Baghdad has yet to begin and that troops may be delayed a few days as bad weather, including sandstorms, closes in.
0230: American Secretary of State Colin Powell describes the progress of US-led forces in Iraq as rather remarkable and says the US campaign will be successfully finished in the not-too-distant future.
0053: Pentagon identifies the two Apache helicopter pilots captured by Iraq and shown on TV.
0031: British support for the war in Iraq increases to 54% of the population, according to an ICM survey for The Guardian newspaper carried out in the days since hostilities started. Thirty percent of those polled were opposed to the war.
0005: President George W Bush is expected to ask Congress for almost $75bn (£47bn) to pay for the war in Iraq, and will formally propose a supplementary budget in a speech later on Tuesday.
The movements of those reporting from Baghdad are restricted and their reports are monitored by the Iraqi authorities.
Reporters with the US and British military are restricted in what they can say about precise locations or military plans. Click here for more details.