Traced?? Tumblers, using intermediary cryptos like Darkcoin? using multiple exchange acc and shuffling the amounts. Lots of options to make blockchain analysis nearly impossible.
So you believe that the only way terrorist organization can acquire bitcoin is to buy it with us currency? very short sighted, no? LocalBitcoins? hacking? use your imagination.
dude, local bitcoins still needs currency... but yea, theft/hacking is of course an option too. except the theft of any significant amount (like the bter hack today) is readily known, and the addresses involved are then known and can be tracked.