The Seoul Nulcear Security Summit has prime goal of preventing nuclear terror.
Though nulcear terror using nulcear weapon(nuclear material) has not happened yet and thus is in the realm of imagination, it is ‘real threat’ because it is possible.
This kind of notion comes from the fact that nulcear materials are spread all over th world. Currently, there are enough highly enriched uranium and plutonums to make 126,500 nulcear bombs.
The problem is that in some countries, these nuclear materials are not perfectly controlled.
According to the IAED, from 1993 to now, robbery·loss·usurp·illegally trading of nuclear and radioactive materials have numbered around 1,800 to 2,000. Recenlty, IAEA says that about 200 cases have
been reported every year.
This fact tells us that nuclear materials might end up in hands of terrorists.