The Ministry of Defence has released a video showing an attack on Islamic State in Iraq.
The text accompanying the video said: "In the early hours of Friday 27 February, an RAF Tornado GR4 patrol conducted reconnaissance to the north-west of Haditha. An ISIL armoured personnel carrier was located, and destroyed with a Brimstone missile."
The first few Iraqi troops have entered the suburbs of Tikrit - Saddam Hussein's hometown - as an operation to seize back control of the city from Islamic State militants gets underway.
More than 27,000 Iraqi soldiers and Shia volunteers launched a three-pronged attack, firing mortars and exchanging gunfire with the militants at three different locations in the bid to liberate the city.
A large-scale military operation has been launched in a bid to recapture Saddam Hussein's hometown in Iraq, according to The Associated Press, citing the country's state television service.
Tikrit, which is around 80 miles north of Baghdad, fell under control of Islamic State militants last summer along with the country's second-largest city, Mosul.
Ahead of the operation, Prime Minister Haider al-Abadi called on Sunni tribal fighters to abandon the extremist group, promising them a pardon.
BREAKING: Iraq state TV says large-scale military operation to recapture Saddam Hussein's hometown begins.
A US-led coalition has launched seven air strikes in Iraq and two in Syria against Islamic State militants since yesterday morning, the Combined Joint Task Force announced.
Two air strikes involving US drones in Syria near Al Hasakah struck an Islamic State tactical unit and destroyed two vehicles.
In Iraq, the US-led coalition used warplanes and drones to strike near Al Asad, Al Qaim, Kirkuk and Mosul, destroying Islamic State tactical units, boats, a storage facility, buildings and other targets, according to the statement.
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Royal Air Force Tornado and Reaper jets have flown daily armed reconnaissance missions to support the Iraqi government in its fight against Islamic State militants, the Ministry of Defence has said.
"In the most recent UK military engagement, one of our Reapers provided close air support to an Iraqi unit in combat with Isil terrorists in Diyala province on Friday 13 February," a spokeswoman said.
"The Reaper spotted a machine-gun team firing on the Iraqi troops, and conducted a successful attack with a Hellfire missile. A second machine gun then opened fire on the Iraqis, and the Reaper conducted a further strike with another Hellfire" she added.
A major offensive is being prepared to oust Islamic State (IS) from one of its strongholds in Iraq, according to the country's Prime Minister Haider al-Abadi.
Mr al-Abadi said work had begun on plans to liberate Mosul, the country's third largest city, which has been under IS control since June last year.
The Iraqi Prime Minister insisted that he did not want the international coalition to supply ground forces but called for more equipment and training for Iraq's military.
Speaking to the BBC Mr al-Abadi said careful plans were being made to retake Mosul from IS, also known by the Arabic name Daesh.
"We are assigning certain army divisions to that task and other security forces and I think that the international coalition air campaign must be very well organised with our own troops on the ground.
"I'm pretty sure that we can liberate Mosul with the minimum of casualties and costs and we can cause a lot of damage to Daesh," he said.
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US-led forces launched 15 airstrikes against Islamic State in Iraq and 11 in Syria, the US military said.
It added that nine targets in Syria centered around the border city of Kobani that was recaptured from the militants last month.
The strikes in Kobani hit seven of the militants' tactical units and destroyed five vehicles and two staging areas, the Combined Joint Task Force said in a statement.
The strikes in Iraq targeted northern areas including al Qaim, Kirkuk, Mahkmur, Mosul and Tal Afar, it said. The strikes took place in a 24-hour period beginning on Friday.