I'd like to add something to your point about proliferation-related activities.
Many will have followed the announcement by the government a week ago, when we lifted many of the sanctions that were in place against Iran. I should tell you that we did not lift the controls that we have on exports to Iran that are of concern for proliferation, particularly with respect to nuclear and ballistic missile goods and technologies.
When we reviewed our package of sanctions, we employed a lot of rigour to ensure that we wouldn't open the door to trade and proliferation of sensitive goods and services. In fact, we also added six individuals and one entity to our autonomous sanctions under the Special Economic Measures (Iran) Regulations for their role in supporting Iran's ballistic missile program.
We're constantly watching for this kind of risk and mitigating against it when we can.