Attacks on BTC will have to coordinated by the current powers. Not sure, but the EU is barely able to move quickly and cohesively with their central bank. The US is another story. Monopoly comes to mind.
Not really.
As far is 'terrorism' is concerned, the USA is quite able to dictate its rules to the rest of the world.
Look at what they did with air travel.
And as the USA is ruled by the banks, it's clear which way regulation will be heading.