Many Gulf residents will still remain opposed to a U.S. presence in the region for religious or Arab nationalist reasons. However, there would be less anti-U.S. hostility stemming from U.S. support of Israel.
As relations between the Arab world and Israel improve, the Gulf states would be less likely to use their leverage in the global oil market to press the United States to cut its support for Israel.
U.S. arms sales to the region, while still likely to receive Israeli scrutiny, will probably become less politically sensitive in the United States.
If a major regional crisis similar to the Iraqi invasion of Kuwait were to occur again, Israel would no longer prove a heavy burden to the U.S. military. The United States could let Israel defend itself if it were attacked without fear of breaking a Gulf state coalition.
If a similar crisis erupts in the future, Israel could become an accepted, if passive, member of a Gulf state-U.S. coalition.
During a conflict or crisis, Israel's military and logistics assets might prove helpful to deploying U.S. forces. In addition, access to Israeli airspace could be valuable in sustaining an air bridge to the Gulf.