Egypt was part of the force that intervened to try to stop the ethnic cleansing of the Christians and Muslims of Palestine by the European Zionists. The British were well aware of this. You have been fed Zionist propaganda all your life, you can't accept the truth.
"Declassified UK reports document build-up of conflict,
Jewish public's endorsement of their leaders' pro-terrorist stance and declare
armies of Arab states were Palestinians' 'only hope'"
"The documents, which have a remarkable contemporary resonance,
reveal how British officials looked on as Jewish settlers took over more and more Arab land.
"After an increase in violent attacks by the militant Zionists of the Stern group and Irgun, British officials reported later in 1946:
"Arab leaders appear to be still disposed to defer active opposition so long as a chance of a political decision ...It is now obvious that the only hope of regaining their position lies in the regular armies of the Arab states."
British officials predicted war – and Arab defeat – in Palestine in 1948