There have been numerous rebel groups in Chad throughout the last few decades. In 2007, a peace treaty was signed that integrated United Front for Democratic Change soldiers into the Chadian Army. The Movement for Justice and Democracy in Chad also clashed with government forces in 2003 in an attempt to overthrow President Idriss Déby. In addition, there have been various conflicts with Khartoum's Janjaweed rebels in eastern Chad, who killed civilians by use of helicopter gunships. Presently, the Union of Resistance Forces (UFR) are a rebel group that continues to battle with the government of Chad. In 2010, the UFR reportedly had a force estimating 6,000 men and 300 vehicles.