The Iraqi insurgency refers to an ongoing warfare in Iraq, which began after the 2003 invasion of Iraq.

The first phase of insurgency began shortly after the 2003 invasion of Iraq and prior to the establishment of the new Iraqi government. From around 2004 to May 2007, the insurgency primarily targeted Coalition armies, while latterly, Iraqi security forces, seen as collaborators with the coalition also became targeted. During this period, only 10% of significant attacks have targeted Iraqi civilians.^{[citation needed]}These attacks on civilians have, however, caused the largest number of victims.^{[citation needed]}

With the full scale eruption of the civil war in February 2006, many militant attacks had directed the Iraqi police and military forces of the Iraqi government. The attacks had continued during the transitional reconstruction of Iraq, as the Iraqi government tried to establish itself.

Despite the fact that civil war violence decreased in late 2008, the insurgency kept going on since and until the U.S. withdrawal in 2011. Since the U.S. withdrawal in December 2011, a renewed wave of sectarian and anti-government insurgency has swept Iraq, causing nearly 1,000 mortal casualties by March 2012.

Donald Henry Rumsfeld (born July 9, 1932) is an American politician and businessman. Rumsfeld served as the 13th Secretary of Defense from 1975 to 1977 under President Gerald Ford, and as the 21st Secretary of Defense from 2001 to 2006 under President George W. Bush. He is both the youngest and the oldest person to have served as Secretary of Defense. Additionally, Rumsfeld was a four-term U.S. Congressman from Illinois (1962–1969), Director of the Office of Economic Opportunity (1969–1970), Counsellor to the President (1969–1973), the United States Permanent Representative to NATO (1973–1974), and White House Chief of Staff (1974–1975).

Born in Illinois, Rumsfeld attended Princeton University, graduating in 1954 with a degree in political science. After serving in the Navy for three years, he mounted a campaign for Congress in Illinois' 13th Congressional District, winning in 1962 at the age of 30. Reelected four times, he was a leading co-sponsor of the Freedom of Information Act. Rumsfeld was reluctantly appointed by President Richard Nixon to head the Office of Economic Opportunity in 1969; appointed Counselor by Nixon and entitled to Cabinet-level status, he would also head up the Economic Stabilization Program before being appointed Ambassador to NATO. Called back to Washington in August 1974, Rumsfeld was appointed Chief of Staff by President Ford, recruiting a young one-time staffer of his, Dick Cheney, to succeed him when Ford nominated Rumsfeld Secretary of Defense in 1975.

Saddam Hussein Abd al-Majid al-Tikriti (Arabic: صدام حسين عبد المجيد التكريتي Ṣaddām Ḥusayn ʿAbd al-Maǧīd al-Tikrītī; 28 April 1937 – 30 December 2006) was the fifth President of Iraq, serving in this capacity from 16 July 1979 until 9 April 2003. A leading member of the revolutionary Arab Socialist Ba'ath Party, and later, the Baghdad-based Ba'ath Party and its regional organisation Ba'ath Party – Iraq Region, which espoused ba'athism, a mix of Arab nationalism and Arab socialism, Saddam played a key role in the 1968 coup, later referred to as the 17 July Revolution, that brought the party to long-term power of Iraq.

As vice president under the ailing General Ahmed Hassan al-Bakr, and at a time when many groups were considered capable of overthrowing the government, Saddam created security forces through which he tightly controlled conflict between the government and the armed forces. In the early 1970s, Saddam nationalized oil and other industries. The state-owned banks were put under his control, leaving the system eventually insolvent mostly due to the Iran–Iraq War, the Gulf War, and UN sanctions. Through the 1970s, Saddam cemented his authority over the apparatuses of government as oil money helped Iraq's economy to grow at a rapid pace. Positions of power in the country were filled with Sunnis, a minority that made up only a fifth of the population.