As a Jew and I don't think that is true at all and feel it is a bit of a dangerous characterization. Jews have just as much scruples as any other groups.

What I do think is true is that Jews have more fear of others based on past treatment and even a lot of current rhetoric and may justify actions as necessary for safety.

We do also happen to be a very small group of people. For instance, Palestinians have 1 billion Muslims supporting them.

That said, I happen to think that these unscrupulous policies will actually cause more harm than good.