It's not a baby of Britain at all. Britain took the lands after the fall of the Ottoman Empire. We merely held the lands, we did not encourage the influx of the Jewish political Zionists into the Ottoman Empire for the sole reason that we did not hold the lands. It was not until 1945 when a massive influx of Jewish immigrates (to the distaste of already settled Jews) from North Africa and South-East Europe occured. Britain recognised the growing trouble between the Arabs and Jewish peoples.
We pulled out. We did not create the place, we simply left. The U.S put forward the idea of a UN council overseeing Palestine in the vacuum left by British departure. Britain had nothing to do with the forming of the Israeli state. The conquest of Palestine was on the minds of Jewish Zionists before World War 1 even began. It is also the U.S that uses it's UN veto to prevent any military sanctions being put against Israel.
I know the political history behind it all. The U.S has an unhealthy addiction to Israel, it's quite scary. War was inevitable though, from the start. Even the U.S didn't favour Israel in every action, especially after Israel attacked U.S.S Liberty. But, after the 1967 war the U.S has propped up Israel.