The Psalm 83 war is the first of six end times wars involving the nation of Israel.  It begins with the intention of completely annihilating Israel, and is perpetrated by her immediate neighbors, who directly surround her.  The list of nations who participated in this war are as follows (modern day names included):

     Tents of Edom = [decedents of Esau] Palestinian Refugees and Southern Jordanians
     Ishmaelites = Saudi Arabians
     Moab = Palestinian Refugees and Central Jordanians
     Hagrites = Egyptians
     Gebal = Northern Lebanese
     Ammon = Palestinian Refugees and Northern Jordanians
     Amalek = Arabs South of Israel
     Philista = Palestinian Refugees and Hamas of Gaza Strip
     Inhabitants of Tyre = Hezbollah and Southern Lebanese
     Assyria = Syrians and perhaps Northern Iraqis included
     Children of Lot = Moab and Ammon

Their goal in attacking Israel is to completely wipe her from existence, and remove her as a nation from the world map.  They ultimately fail, and Israel captures the land of their enemies allowing them, for the first time in history, to control all of the land God promised them.  Some of the events that have been prophesied to happen in conjunction with this, or which will kick it off, is (not necessarily in order of occurrence) the Isaiah 17 prophecy of the destruction of Damascus, an attack by someone (Syria, Iran, Jordan, etc) with missiles that spawns a counter attack by Israel, destruction of Iran's nuke plants, attacks on Tel Aviv or other Israeli cities with conventional or nuclear weapons, dirty bomb attacks by terrorists, etc.

During this war Israel is also prophesied to start hauling out some of their secret weapons, including perhaps neutron bombs, Tesla weapons (vacuum energy bombs, etc) and other similar super advanced weapons against its enemies.  Israel will be wounded during this war and will suffer severe harm, but it will be victorious.  Jerusalem will be attacked and almost overthrown, but will survive.  Tel Aviv however is supposed to be wiped off the map, or at the very least rendered uninhabitable.  Also, all biblical evidence that I've gathered on this so far seems to point towards the end of this war being a decisive victory with all of Israel's inner ring enemies (those listed above) being completely wiped out and ceasing entirely from being nations.

EDIT (2024-12-20): After some more research, I've come to the conclusion that this prophecy only happens when ALL the listed nations 1) come against Israel at once, and 2) those said nations lose their land to Israel.  This event is in similar nature to the Yom Kippur war, but on a much larger scale, and Israel not only captures the land of their enemies, but gets to keep it this time, not give it back like they have been.  So, despite it looking like this was underway, in reality it's not as it's actually other similar prophecies playin out right now, and not this one.  So I set this back to pending.

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(*Do you have a better description, or did you find an error? Please let me know. Thanks*)

The Coming Psalm 83 War Explained (Jimmy Evans) - Report Link
The Coming Psalm 83 War Explained (Bill Salus and Jimmy Evans) - Report Link
Bill Salus: Psalm 83 (Bill Salus) - Report Link
isaiah 17 and psalm 83 Destruction of Damascus (Hal Lindsey) - Report Link
Hamas in Prophecy (Bill Salus) - Report Link
Edom, Moab, and Ammon (Jack Kelley) - Report Link