It was a step forward to charge Pinochet with terrorism, and to acknowledge that the essence of the crime is the use of political violence to induce great fear in society and against those who are innocent, and not just such violence that is directed against the state by opposition groups.

If Trump were to go ahead with a renewed policy of hostility toward Iran, it would immediately raise tensions, and could quickly escalate in the direction of war, with grave dangers of producing another Syrian tragedy of massive displacement and prolonged strife that could cause turmoil and disruptions throughout the entire region, and give rise to a new cycle of extremism.

Looked at objectively, it is clear that the overwhelming majority of civilian deaths resulting from political violence are produced by what should be understood as "state terror." Terrorism also serves as an excuse to avoid diplomacy and the peaceful resolution of conflict.

This issue of expanding the reach of international criminal law by reliance on the use of Universal Jurisdiction by domestic courts needs to be balanced against the injustice of according impunity to those with strong geopolitical backing. It is notable that several western European countries backtracked on UJ after threats of retaliatory moves by the United States and Israel. There is no doubt that the domain of UJ is a geopolitical battleground.

When Daniel Gorenstein was chair, he did mathematics from 5am to 12noon, spending the second half of his working day on administration. When I was chair, I also spent half of my time on research: every other minute.

When I told my mother that I have to give a talk, and was debating what could I possibly say to non-mathematicians, she said: "You got what to wear?".

There was a deliberate decision after the failure of the League of Nations to make the next attempt to establish a global political actor sensitive to geopolitical realities. The underlying idea was to provide major states, defined in 1945 by reference to the winners in the Second World War (now an anachronism), with assurance that they could take part in the UN without jeopardising their national interests. In this regard, the UN has succeeded, as none of the big countries has withdrawn, and the Organisation has managed to achieve virtually universal membership of all sovereign states.