dylanredefined
Not a house elf a tiger
It was a very strong threat, made for a variety of purposes including trying to get them to behave in certain ways, not a declaration that they would be attacked under all circumstances. We know which countries the USA has long regarded as enemies, and Syria is on that list. But in case you didn't notice he also mentioned Cuba in the same speech, and they are not about to attack Cuba. On the other hand, Libya which was also mentioned was of course eventually attacked despite the fact that it responded in the desired manner to the issue he claimed at the time was central to becoming a US target, i.e. WMD.
That was more to do with the population revolting and Qaddafi bombing them.
He had been welcomed back into the international community and everyone was gearing up to buy his oil and sell him new weapons when the people decided they had had enough of him. The West reluctantly joined in their is even less enthusiasm for Syria. As Assads a horrible dictator and the rebels are little better. Either side wins their is going to be a massacre.