I know that if you want to find patterns in history then you can, and there are many conflicts I have not listed here, but still, it is interesting to note what looks like a trend here...
1948 Nakba and first Israeli-Arab war
1956 Suez Crisis between Egypt and Britain, France and Israel
1967 Israeli-Arab war
1975 Lebanese Civil War
1980 Iran-Iraq War - First Gulf War
1982 Israeli Invasion of Lebanon
1991 Iraqi invasion of Kuwait - Second Gulf War
2003 American invasion of Iraq - Third Gulf War
It appears we are overdue for another large scale conflict.