Final answer:
The fact that terrorists can access nuclear weapons is a serious threat due to their destructive power, the potential increase in their overall arsenal, and the expertise required to deploy them.
Step-by-step explanation:
The fact that terrorists can potentially access nuclear weapons is a serious threat due to several reasons. Firstly, nuclear weapons require a lot of highly-skilled people to deploy them, which means that terrorists who gain access to them likely have the knowledge and expertise to use them destructively. Secondly, if terrorists can access nuclear weapons, they can also access conventional weapons, increasing their overall arsenal and the potential damage they can cause. Lastly, nuclear weapons are unprecedented in their destructive power and long-term effects, making any use of them by terrorists catastrophic and potentially devastating.
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