America is currently heavily involved with the Middle East for various reasons such as oil and fighting terrorism. Ranging from the US's interest in oil to the support of Israel to the war on terrorism, US is the glue holding all of the events in the Middle East together.
US Senate rejected Wilson's treaty for self governing and from this point on, US was only involved in international matters that would benefit them (until WWII)
Britain allowed US to participate in the development of the Middle East's oil resources
SOCAL of California came to an agreement with Saudi Arabia and as a result, they were allowed to explore Saudi Arabia for oil
Major discovery of oil led to a boom in oil imports to the US and since then, the control of oil was the center of US foreign policy
Truman announced that 400 million dollar foreign aid will be given to Turkey and Greece to improve relations. Thus the US effectively stepped into British's shoes in the Middle East
This showed US's support of Israel and would lead to further dealings of supplies.
Supported Israel by giving military supplies to help combat the Arab countries
Saudia Arabia's king initiated oil embargo due to US's support of Israel. US secretary of State, Kissinger, negotiated to end fighting between Israel and Egypt with Syria. Then oil embargo was called off
US was a crucial factor in resolving the conflict between Egypt and Israel
US failed to rescue hostages Iran had captured (Operation Eagle Claw) and further increased the support for Khomeini.
During the war, US supported Iraq due to complicated relations with Iran but also give some military supplies to Iran in hope for releasing hostages which partially worked
Suicide bomber in US Marine barracks in Beirut killing 241
US troops with the support of European allies and even the Soviet Union, sent to stop Hussein from taking over Kuwait and was successful. This angered extremists such as Bin Laden as America was viewed as an enemy to Islam (according to extremists)
US sent troops into Afghanistan to fight Al-Qaeda and Taliban as part of the War on terror
Terrorist attacks on 9/11 provoked many changes within US's policies and the people's views of the Middle East. This would lead to further conflicts.
The US viewed Iraq as a threat and invaded it as they had claims of WMDs' which eventually turned out into false information. In the end, it cost 700 billion dollars