I had to dig for a while, through stories that predate this business from Trump, to find out Obama released over 150 prisoners from Gitmo, and it's too early to say how many are back on the battlefield because he dumped a lot of them during just the last few months of his Presidency.
That said, this probably wasn't the best directed Tweet from The Donald.
I have read a theory that Donald Trump's imprecision on his statements is actually a master stroke.
In the past, many is the time i've argued with people who know less about a subject than do I, so occasionally in such circumstances I will say something deliberately wrong, knowing full well that by working to prove me wrong, they will in fact discover the actual truth.
It is the actual truth that i'm trying to get across to them, and sometimes a completely incorrect statement is what it takes to get them to dig for it.
People just like to go "Ah HA! I've got you!" and so you give them a chance to make you look stupid and they will often take it. In the meantime, they actually learn what you wanted to get across to them in the first place.
I've been reading commentary from various places (Scott Adams Blog, et al) that this is exactly the technique Trump is employing to get his point across. The Media, quick to look for anything wrong in what Trump says, will often contradict him in such a way that it reveals more than they wanted.
Someone recently pointed out that Trump's twitter about "Wiretapping" has destroyed the media's "The Russians hacked the election" effort. (Intended to undermine Trumps legitimacy.)
Since he said he was wiretapped and surveyed, the media have now been asked how all this information about "Russian contacts" with Trump associates was discovered if not through wiretapping?
This put the media into an incredibly uncomfortable position. They now have to defend the Russian connections at the expense of admitting surveillance, or they have to drop the Russian Hacking, and assert there was no surveillance.
Trump looks and acts like a fool, but for some reason the consequences of what he does always seems to bitchslap his enemies and leave them reeling.
I think what Trump has been doing is aptly summed up in my tagline:
‘What all the wise men promised has not happened, and what all the damned fools said would happen has come to pass.’