This photograph from the April meeting of G5 leaders emphasises how much change 2016 has brought, with the rise of anti-establishment politics and the rejection of the status quo.

In it, Angela Merkel is seen, in Hanover, in conversation with Matteo Renzi, François Hollande, Barack Obama and David Cameron: the leaders of Europe's four largest economies and the US.

Of the five of them, she is now the "last leader standing" - and she herself is facing a tough battle to cling on to power in German elections next year.