I'm confused too, if I am getting the internship after I get my clearance, then why didn't they just select(ed) me. But you know what I'm gonna hold them to their word, because if they said I'm gonna get a slot, then they freaking' better give me a slot. I know what you mean, you know the internship is only in March '15, if they aren't really gonna offer me a slot, then I would peruse other career opportunities, not waste 5 months of my life waiting for something that's not gonna happen. This situation is annoying...
Hi reinax, got the same email, but if you ask them for clarification, they tell you a different thing entirely; that you will get the internship as soon as you security clearance is Ok-ed, to any of the positions that you applied for, or at least that's what they told blabla946 and me.
Regrading a job offer afterwards, no idea really, but judging from my previous experience in internationals, depends on your performance, department where you will be posted and ultimately luck.