Within a matter of months, Iran could be in possession of nuclear weapons. The evidence for this was considered last week here. This is a state perfectly content to finance, train and arm with conventional weapons terrorist groups in Afghanistan, Pakistan, Iraq, Lebanon and Palestine. This is a state with political discourse dominated by nationalism.
These are the two major impacts from Iran’s decision: nuclear proliferation, and the possibility of terrorist organisations obtaining weapons of mass destruction. It is often easy to forget these consequences and simply focus on the prospect of the Ayatollah with his finger on the button, hoping that mutually assured destruction will save us.