European Commission President Ursula von der Leyen tweeted in French, ``together we will make France and Europe advance.''

The Dutch prime minister also tweeted in French his hope to ``continue our extensive and constructive cooperation in EU and NATO.''

In Germany, politicians around the political spectrum offered support, including from the pro-business Free Democrats, the environmentalist Greens and conservative Christian Social Union.

Many in Europe had worried Le Pen would undermine European unity and its post-war order.