French President Francois Hollande says the British vote to leave the European Union poses questions "for the whole planet."
Hollande vowed Saturday to maintain relations with Britain, notably concerning migrants crossing between the two countries and military and economic cooperation.
Speaking after a meeting in Paris with U.N. Secretary-General Ban Ki-moon, Hollande said: "For the entire planet there is a question, what will happen?"
He called for an orderly separation between Britain and the EU after Thursday's historic vote to exit the bloc, formed after two world wars to prevent new conflict via trade cooperation.
Hollande, whose country was a founding pillar of European unity, is holding emergency meetings Saturday with leaders of France's political parties as EU leaders try to keep the bloc from unravelling after the British vote.