This sounds plausible, but highly suspect mostly from the inconsistencies.

Here's a quote from the section:

HEDGES: But talk a little bit about the experimental weapons. And then before we close, a little bit--because it's not working. And because we have seen senior Israeli officials talk about further massive military assaults as inevitable, where we're headed. But let's talk about, just quickly about the, these horrific weapons that they're testing. I mean, they're using the people of Gaza like guinea pigs.

So far so good - this sounds typical for Israeli policy of threatening further engagement. Using untested weapons on people in Gaza is something I haven't heard of before, but I certainly wouldn't put it past them.

BLUMENTHAL: Well, since 2006 Israel has used dense inert metal explosives, which were designed actually by, you know, figures in Israeli academia, including quantum physicists, in collaboration with the Israeli military for assassinations. The point of these weapons is to generate enough--a massive explosive capacity, but within a limited range, to actually eliminate or limit civilian casualties to the target. I can't explain how they, these weapons operate. They're [inaud.].

The idea of a "massive explosive capacity but within a limited range" is a contradiction in terms. I don't find it plausible, and appealing to quantum mechanics isn't a good way to explain how a high-energy explosion can suddenly be stamped out after a certain range.

HEDGES: They attack the soft tissue, right?

BLUMENTHAL: But they're tungsten based, and they attack the soft tissue and cause death over a period of days. And the way that you identify the munitions is through a very small entry wound, and then massive burning of the organs. We're talking about an entry wound that could be little more than one millimeter wide.

OK, so after some research into tungsten it appears we're talking about DIME weapons - which appear to be doing exactly what I was claiming couldn't be done. Ah, you live and learn.

Unless we want to call the Wikipedia page under question, this looks like it checks out.