How likely are terrorists to use liquid materials to create a bomb?

How likely are terrorists to use liquid materials to create a bomb?

Erroll Southers (Former Deputy Director of the California Department of Homeland Security) gives expert video advice on: What kinds of weapons do terrorists like to use?; How are terrorist bombs typically used?; How likely am I to be a victim of a terrorist bomb? and more...

It can really work; how likely is it? A chemist who know how to do it, they can be successful. The challenge you have there is getting all the ingredients in one spot, putting them together; and the risk, if you will, is of not blowing yourself up. So if you're successful enough to get everything in one spot and put it all together, you can do it. How likely is it? I'm going to say that it wouldn't be my method of choice, given that there are other ways to put together IED's (or improvised explosive devices) that are a lot safer to me, the attacker, than the liquid threat. But the liquid threat is going to take more than one chemical, and in most cases, more than one person to put that together, with the security apparatuses we have in place.