Non-proliferation, Rogue States aren't the Problem

But there's just one problem: The United States is looking for nukes in all the wrong places. Nuclear terrorism won't come from countries; it will come from vast networks of operatives with only tenuous links to states. Nor are terrorists likely to get their nuclear material from rogue regimes. Far more probable is that they will steal it or obtain it through the growing global black market. If this is to be prevented, the United States and its allies will have to give their counterproliferation mindset a sweeping overhaul.

Today's terrorist threats are far less tangible than the traditional, state-centric security ones embodied by such countries as Iran, North Korea, India, Pakistan, and Israel. Rather than diplomatic channels, terrorist networks use advanced information technology to advance their ideology, goals, and missions. They are bound by none of the norms and restraints of states. [ForeginPolicy.com]