BBC News Online charts the latest developments in the Iraq conflict.
[All times GMT and approximate]
Wednesday, 26 March
2330: Several large explosions reported in Baghdad in further aerial bombardment by US-led forces.
2233: About 1,000 members of the US Army's 173rd Airborne Brigade parachute into northern Iraq and seize control of an airfield in the first major troop deployment in the region.
2215: British Prime Minister Tony Blair arrives in the US for a meeting with President Bush to discuss the war in Iraq.
2100: Iraqis launch rocket attack against US marines south of Nasiriya, injuring 20.
2031: The UN Security Council opens an emergency session on Iraq with Secretary General Kofi Annan saying many people around the world were questioning the legitimacy of the action being taken against Iraq.
2025: A column of as many as 1,000 vehicles of the Iraqi Republican Guard is reportedly moving very close to the American units south of Baghdad.
2012: Three huge explosions rock the centre of Baghdad as the Iraqi capital comes under renewed aerial bombardment.
1838: US Central Command in Qatar admits coalition forces used precision guided weapons to attack Iraqi missile installations near a residential area of Baghdad, where Iraqi authorities say 14 civilians were killed. The US says the missiles were positioned less than 90 metres (300 feet) from homes.
1821: Iraqi armoured vehicles leaving Basra are attacked by coalition war planes and artillery fire.
1705: A large convoy of about 70-120 Iraqi tanks and armoured personnel carriers - is seen moving out of the southern city of Basra, heading south-east; coalition aircraft are said to be preparing to attack them.
1643: US military announces it is to deploy its high-tech 4th Infantry Division to the Gulf to join the invasion of Iraq. The first troops are likely to leave on Thursday, officials say.
1630: Explosions hit the southern outskirts of Baghdad in renewed air strikes, apparently aimed at Iraqi forces believed to be dug in around the city.
1550: Addressing troops at Macdill Air Force Base, Florida President Bush says US-led forces are "making good progress" but warns "this war is far from over".
1527: Al Jazeera television broadcasts images of two dead soldiers and two prisoners of war, whom it says are British.
1507: UN Secretary General
Kofi Annan says he is confident the Security Council will reach a "satisfactory conclusion" on the humanitarian oil-for-food programme for Iraq.
1315: General Vincent Brooks says he does not have any information about Wednesday's explosions in Baghdad's shopping area, adding that he is not even certain that they were caused by the US-led forces.
1310: US military spokesman General Vincent Brooks tells a news briefing at the US Central Command headquarters in Qatar that coalition against Iraq is growing. The spokesman says 47 countries now back the US-led forces.
1300: The first shipments of humanitarian aid reach the southern Iraqi town of Safwan, after several lorries cross from Kuwait, escorted by US troops.
1155: Iraqi Information Minister Mohammed Saeed al-Sahhaf denies reports that the port of Umm Qasr has fallen to the US-led forces. The minister accuses the allied troops of using cluster bombs.
1127: A British Air Force spokesman in Kuwait - responding to the reports from Baghdad - says all loss of civilian life is regretted. The spokesman says Britain and the US take great care to minimise civilian casualties, and the incident will be investigated.
1030: Iraqi officials say at least 14 people were killed and up to 30 injured when a busy shopping area in Baghdad was hit by two missiles. Staff with Reuters news agency say they have counted at least 15 burnt corpses. Locals say 45 people have died, the BBC's Paul Wood in Baghdad reports.
0955: The Iraqi satellite TV resumes its services. Unlike the domestic terrestrial service which resumed at about 0630, the satellite TV had been off air since about 0200.
0940: Several massive explosions rock Baghdad.
0805: The Commander-in-Chief of the Turkish army, General Hilmi Ozkok, says Ankara reserves the right to send more troops into northern Iraq if it feels its security is threatened - but only after consultations with the US.
0800: Baghdad comes under renewed bombardment in fresh air raids.
0719: UK Defence Secretary Geoff Hoon tells the BBC no direct attempt has been made to take Iraqi television off the air. He says the aim of overnight attacks had been to target Iraq's command and control facilities in Baghdad.
0646: US Marines run into stiff Iraqi resistance, halting their advance north from the city of Nasiriya towards Baghdad, says a Reuters correspondent travelling with the marines unit.
0600: Iraqi state television is back on air despite the bombing of the station by US-led forces hours earlier. Iraq's international satellite channel remains off air.
0450: Al-Jazeera television channel reports several large explosions rock the northern Iraqi city of Mosul, shortly after air sirens sounded in the city.
0427: Pentagon confirms that Iraqi state television is off the air after the station was hit by precision-guided bomb and cruise missile. Denies reports that new, so-called "e-bomb" was used.
0342: US Central Command in Qatar says coalition cruise missiles and bombs struck Iraq's main television station in addition to key telecommunications targets, damaging the regime's "command and control capability".
0337: B-52 bomber takes off from RAF Fairford in western England for possible involvement in the bombing of Iraq.
0200: A number of large explosions are heard in Baghdad shortly before dawn.
0120: Washington will allow non-US companies to bid for contracts to rebuild post-war Iraq, says head of US Agency for International Development Andrew Natsios.
0010: US Secretary of State Colin Powell says it is a matter of utmost concern to the US to get aid flowing through the southern Iraqi port of Umm Qasr.
0005: UN Secretary General Kofi Annan warns that the US and its allies will have to provide humanitarian aid to the Iraqi people until security conditions improve in the country.
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.