Nothing. The Palestinians were very much affected by the results of the Six Day War, but did not actually contribute to any of the fighting.
Six Day War of 1967.
The name of the war is "The Six Day War of 1967". In some Arab circles, it is called the "Naksa" which means "Setback".
The six-day war.
Strictly speaking, no foreign power actively supported Israel during the fighting of the Six Day War.
Jordan fought in the Six-Day War at Egypt's urging. President Nasser claimed that he was routing the Israelis and wished for Jordan's help in the conquest. Of course, we know now that Nasser was losing badly and was hoping for a "Hail Mary" from the Jordanian side, which did not come. The Jordanians entered the war, but were swiftly defeated and the West Bank transferred to Israeli occupation.
The Arabs took the hardest hit in the Six Day War, with 9,800-15,000 soldiers lost in battle. The Israelis had a death toll of 776-983 soldiers. The Syrians lost about 1,000 people in battle. Around 6,000 Jordanians were killed during the war as well.
On the contrary, Israelis are seeking peace.
Israel, Egypt, Jordan, and Syria were the only nations involved in the Six Day War. Any other nation was not involved in the Six Day War.
It is unclear what "victim" means. The Palestinians were the only clear victims of the Six Day War in that they neither instigated violence with the Israelis in this period and were not defended by the Arab States in any substantial way. The Six Day War was responsible for the Israeli Occupation of the West Bank and the Gaza Strip. It could be said that the Egyptians, Jordanians, and Syrians were the victims of the Six Day War in that the result of the war was counter to their interests, but it is difficult to sympathize with these three parties considering Egypt and Syria made overtly bellicose moves against Israel prior to the initiation of hostilities and Jordan and Syria actually declared war on Israel, not the other way around. It could be said that Israel was the victim prior to the Six Day War considering the amount of shelling that came from Syria and economic and military threats that came from Egypt prior to the war. However, since the results were so positive for Israel, it is hard to consider Israel to be a victim of the Six Day War.
Statehood (modern times) . . . 1948 Six Day War . . . . . 1967
The war only lasted for Six Days (June 5-10, 1967)
Jordan allied with Egypt and Syria in the Six Day War.