One fear I have is it could trigger uprisings in other Arab countries, like Egypt.
It is possible that Israeli military action could result in uprisings, but I don’t see that they have much choice other than to conquer Gaza. What would really trigger intervention by Iraq, Iran, and even Jordan, Egypt, and Turkey would be if the Israelis use nuclear or biological weapons to exterminate the Palestinians.
Egypt does not support terrorists.
Sisi has worked with Israel for years eliminating the cross border movement of Terrorist groups.
Hezbollah in Lebanon has been warned and has been hit by Israel strikes.
Hamas will be obliterated.