Brit expats react to the question: Should UK remain in the European Union or not?
This will be Britain's second referendum on European membership in just over 30 years.
It was not clear if Sarkozy would be charged during the hearing.
The Virgin Atlantic flight from London to New York continued over Ireland before requesting to return, flight radar showed.
There is no official confirmation that Paulette and Simone are the oldest twins in France, but they appear to be the likely holders of the title.
Merkel has attempted to lead a generous and tolerant reaction to the tide of migrants entering Europe from North Africa, the Middle East and Afghanistan.