What's happening in Iraq?
Iraq in the Middle East has been in the headlines for many years due to violence there.
But in the last month there has been fresh fighting within the country, between the government and those who oppose it.
In recent weeks an Islamist extremist group called Isis, which has links to terrorist group Al-Qaeda, has taken control of several cities in the north of the country.
Hundreds of thousands of people have left the area to avoid the fighting, which is getting closer and closer to the capital city, Baghdad.
It's believed almost a million Iraqis have fled their homes since January.
Shia and Sunni
Although most Iraqis are Muslim, they belong to different branches of the faith: Shia and Sunni, who disagree about how the country should be run.
The government in Iraq is Shia while the Isis militants are Sunni.
While most people in Iraq are Shia, about 90% of the world's Muslims are Sunni.
America has now sent extra military staff to its embassy in Baghdad to protect staff there.
Iraq's troubled history
This isn't the first time that Iraq has been in the global headlines.
In 2003 the UK government decided to send British troops to the country in a US-led invasion.
It's a decision that was controversial at the time, and now that another crisis has come up, people are asking how much the UK should get involved.
No one is expecting British or American troops to go back to Iraq this time; but both governments say they need to do something to stop the situation getting worse.
The early history of Iraq
Iraq is actually a fairly young country - it was created in 1921 by the British government after they seized control.
The region used to be part of a much larger area, covering lots of countries, called the Ottoman Empire.
When that fell, British rule took over - until Iraq was given independence in 1932.
A number of different governments controlled the country after that, until Saddam Hussein seized power in 1979.
Back then, the UK and US supported him, because he was helping them fight a neighbouring country called Iran.
Things changed when Iraq sent soldiers into another country called Kuwait.
Many countries - including the US and UK - joined together to force Iraq's army out of Kuwait in a conflict called the Gulf War, in 1991.