Israel was established by the British government after a vote in the UN (that's one UN resolution that wasn't ignored)
Also, I wonder if you know the definition of the phrase ethnic cleansing... Because you might have it mixed with "border dispute", or even "occupation", both of which might apply to the political state of affairs in Israel over the past 60 years , but neither of which implies genocide.
You might recognize the word "occupation" as the very same that is oft used to describe British presence in Afghanistan and Iraq, and even the Falkland islands. I hope your replies to stories about the British government are equally vile.
You also should read a bit about Israel's history, particularly about the 1948 war. It may shock you to discover that many Arabs fled Israel willingly (not all though.... ) hoping to return once the invading Arab armies crush the Jewish state. These people are still waiting by the way.
Those who opted to stay, are called Israeli Arabs, they are Israeli citizens and they even get to go to the same schools as Israeli children, and vote for their own Arab parties in the Israeli parliament. There are over a million Israeli-Arab citizens in Israel, about a fifth of the population of Israel. Palestinians don't count as Israeli citizens, nor do they want to be, they have their own bodies of governance, that's where they vote for terrorist organizations to represent them at the peace negotiations.
Of course, I don't believe that the Mossad is behind this operation, despite the fact I'm not morally opposed to it. Simply because the Mossad would never use Israeli identities in such an obvious way.