Israel. There are some debates as to whether Egypt won in the Arab-Israeli War of 1973 or Hezbollah won in the Lebanon War of 2006, but it is generally accepted that Israel was victorious in nearly every conflict it has fought in.

It is the military campaign of Israel against Hizballah in Lebanon, waged in 2006.

YES. The two suicide bombings against the Israel Defense Forces' headquarters building in Tyre, Lebanon took place in 1982 and 1983, which was during Israel's intervention in the Lebanese Civil War. This intervention is commonly called the First Israel-Lebanon War in Pro-Israeli circles (in contrast to the War with Hezbollah in Lebanon in 2006, which is called the Second Israel-Lebanon War).

There were a few wars that Israel fought in Lebanon: the Lebanese Civil War from 1981-1982, the Occupation of Southern Lebanon from 1982-2000, and the War Against Hezbollah in 2006.

Yes the United Nations has intervened in the Israeli - Arab conflicts. The most recent time several years ago when the UN authorized placing French "observers" in southern Lebanon to make sure no missiles could be fired into Israel.

This action failed as missiles were launched into Israel from southern Lebanon. The result was an invasion of Lebanon by Israel. Also Israel launched air attacks on Beirut.