Whatever lies the Left, the press/media, anti Semites will tell you about Israel, the truth can be found with the Arabs' motive after the UN voted that the British could leave and that the land will be partitioned between Arabs and Jews with the Jews getting a lot of desert.
The Jews accepted and the Arabs attacked.
The Secretary-General of the Arab League, at the time, Azzam Pasha, gave the reason for the invasion: " "It will be a war of annihilation. It will be a momentous massacre in history that will be talked about like the massacres of the Mongols or the Crusades."
That Arab desire has never changed.
There was the brief shining moment of the Balfour Declaration, very soon to be replaced by appeasing the Arabs and doing everything to make certain there would never be an Israel. That includes the invasion in 1948 by the so called Arab Legion, an army with Arab conscripts but armed, trained, funded by the British and led by actively serving British officers.
To be anti Israel is in the official British ethos.
I know why in the past Israel was reluctant to fully engage, but today when the US President, the US SOS, the US National Security Advisor, and the US UN Ambassador could not be more friendly to Israel, that Netanyahu doesn't order an operation to decapitate Hamas is criminal misfeasance.