Question: Post-invasion Iraq was marked by what?
About the article "2003 invasion of Iraq", section "Bush declares "End of major combat operations" (May 2003)".

Candidate passages:
Bush declares "End of major combat operations" (May 2003).
On 1 May 2003, Bush landed on the aircraft carrier USS "Abraham Lincoln", in a Lockheed S-3 Viking, where he gave a speech announcing the end of major combat operations in the Iraq war.
Bush's landing was criticized by opponents as an unnecessarily theatrical and expensive stunt.
Clearly visible in the background was a banner stating "Mission Accomplished."
The banner, made by White House staff and supplied by request of the United States Navy, was criticized as premature.
The White House subsequently released a statement that the sign and Bush's visit referred to the initial invasion of Iraq and disputing the charge of theatrics.
The speech itself noted: "We have difficult work to do in Iraq.
We are bringing order to parts of that country that remain dangerous."
Post-invasion Iraq was marked by a long and violent conflict between U.S.-led forces and Iraqi insurgents.
Summary of casualties of the Iraq War.
Possible estimates on the number of people killed in the invasion and occupation of Iraq vary widely, and are highly disputed.
Estimates of casualties below include both the 2003 invasion of Iraq and the following Post-invasion Iraq, 2003–present. 
Differences in the European and U.S. approaches to the issue of Iraq began to emerge in the 1990s.
This period, following the expulsion of Iraq from Kuwait in 1991, was characterized by a policy of containment.
Alongside this policy, however, the United States became progressively more involved in advocating democracy for Arab states, a process which had no parallel in Europe.
The slow movement in Washington from a policy of containment to one of regime change reached a significant milestone in 1998, with the Clinton Administration passing the Iraq Liberation Act.
No parallel movement took place in Europe.
European opposition to a policy of regime change in Iraq meant that little deliberation had taken place in Europe as to what a post-Saddam Iraq may look like.
There was also a pronounced wariness in continental Europe regarding the Iraqi opposition.
Even a December 2002 conference on the subject of democracy in Iraq had to be moved from Brussels to London because of the sensitivity of the subject for continental Europeans.
In Britain, the country closest to the United States on Iraq, relations between Iraqi oppositionists and official circles were few.
Europe's Common Foreign and Security Policy (CFSP) came into being following the Maastricht Treaty in 1993.
In 1999, the CFSP was solidified through the creation of the position of its high representative.
The Iraq crisis was the most significant test with which the CFSP had yet been required to contend.
Iraq, however, saw the EU failing to act as one.
Rather, the approach of real crisis resulted in the major powers of the EU splitting; with France and Germany opposing the U.S.-led plans for invasion of Iraq; and the UK aligning itself firmly alongside America and committing troops to the invasion.
Other European countries sided with either position, many contributing to the multinational force in Iraq. 
The destruction of the Firdos Square statue was an event in the 2003 invasion of Iraq and marked the symbolic end of the Battle of Baghdad. 
As part of the post-invasion social and economic infrastructure reconstruction program, a contract worth $55 million was awarded to study the postal system in Iraq.
The Postal system of Iraq was organized following that study.