In 1951 Egypt tore up the Anglo-Egyptian treaty which meant British troops had to leave the Suez military base, but Britain refused to. The result of this was increasingly violent hostility towards Britain and the British troops in Egypt. Since the establishment of the Israel, cargo shipment to and from Israel were intercepted, removed and destroyed by the Egyptians whilst they tried to pass through the Suez Canal. The UN didn’t like this and told Egypt to terminate the restrictions on the passage of international commercial ships and goods through the Suez Canal. Egyptians took over the canal and implanted the nationalization of it. This meant they were denying French and British their share in the canal that both countries had helped to build. Britain decided to have a military intervention against Egypt in order not to lose the control in the region.
In 1967, the Six-Day war broken up. During this conflict Israel captured the Gaza strip from Egypt and the West Banks from Jordan. Soon after the Israel gained control over the Jerusalem, Palestinian residents in the city were given a permanent resident status in Israel. Egypt responded by planning a military attack on the Israel. Egypt amassed 1,000 tanks and around 100,000 troops on the border of Palestine and received big support from the other Arab countries. Israel responded with 70,000 troops. On June 5th, Israel launched an attack against Egyptian air force. Jordan which had a defence treaty signed with Egypt attacked the Jerusalem.
On February 3rd, 1969 Yasser Arafat was elected as a chairman of the PLO (Palestinian Liberation Organization). From the start PLO used armed forces against civilian and military targets in the conflict with Israel. Eventually PLO tried to take over the population of the West Banks they failed and have been expelled by the Israeli army into Jordan. PLO acted against the Jordanian rule and eventually, King Hussein of Jordan expelled them to Lebanon. From there PLO launched a series of rocket attacks on Israel. In attempt to publicize the Palestinian cause, PLO started an international campaign against Israelis (mainly in Europe). PLO mainly used terrorism to fight against Israelis, the peak of their terrorist activity took place in 1972 and included hijacking of flight 572 and the Munich massacre during the 1972 Summer Olympics in Munich where 11 members of the Israeli team were killed by group Black September. Israel responded with an assassination campaign against the organizers and a raid on the PLO main headquarters in Lebanon. Also Israel planned a series of airstrikes and assassinations of those who were suspected planning the massacre.
In September 1995, Israeli Prime Minister Yitzhak Rabin and PLO chairman Yasser Arafat signed the Israeli –Palestinian Interim agreement on the West Banks and the Gaza Strip in Washington. The agreement allowed PLO leadership to relocate to the occupied territories and granted autonomy to the Palestinians with talks to follow regarding final status. In return Palestinians recognized the Israelis right to exist and promise to stop the terrorist attacks. However the agreement was opposed by the Hamas and other Palestinian factions were already committing suicide bomb attacks in Israel. In January 1996 Israel assassinated the main bomb maker of Hamas, Yahiya Ayahs. In response to this, Hamas carried out a wave of suicide attacks in Israel. Following these attacks Palestinian authority began to act against the Hamas and their activity. In 1997, after two suicide attacks Israel sent two special agents to assassinate the political head of the Hamas.
Due to continued Palestinian violence, the Israeli army operation ‘Defensive Shield’ began on 22nd March 2002. The operation included invasion of Ramallah, the PLO stronghold and placing Yasser Arafat under siege in his military base in Ramallah. According to official information, during the Israelis operation at least 500 Palestinians were killed and 1,500 were wounded. Because of this operation Palestine had a huge loss in military and economy because of all the money spent for the army. The World Bank estimated that $360 million worth of damage was caused to Palestinian infrastructure, this caused large sector of Palestinian population to be left homeless.
The 2008-2009 Israel- Gaza conflict started when Israel launched a military campaign in the Gaza Strip on December 27th of 2008. The aim of the operation was to stop Hamas attacks on southern Israel, and it included arresting/eliminating Hamas members and police force. Conflict broke up because a short six-month agreement between Hamas and Israel has expired and both sides couldn’t agree on conditions to extend the agreement.
In conclusion I don’t think that the conflict between the Arabs and Jews is continuing in to the 21st century because of USA or GB intervention. This is because there is not enough evidence that any of these two countries had helped one or another to attack each other. Although terrorist acts like the World Trade Centre attack on 9/11 means that Hamas wants USA to stay out of their conflict and that Hamas will punish them. Also there is some evidence that both; USA and Great Britain had regularly sold weapons and military equipment to Arabs and Israelis which shows that they have an interest in the conflict and might want it to go on and on.