The international reactions to Trump's victory are very interesting.
Labour leader Jeremy Corbyn said:

"Trump’s election is an unmistakable rejection of a political establishment and an economic system that simply isn’t working for most people. It is one that has delivered escalating inequality and stagnating or falling living standards for the majority, both in the US and Britain.
"This is a rejection of a failed economic consensus and a governing elite that has been seen not to have listened. And the public anger that has propelled Donald Trump to office has been reflected in political upheavals across the world."

Nigel Farage said:

We now have a President who likes our country and understands our post-Brexit values.
Prepare for further political shocks in the years to come."

But the most interesting statement was made by the Italian bond market.

Italian government bonds slid in the wake of Trump’s stunning victory, reflecting worries that Prime Minister Matteo Renzi will lose a referendum on political reform, scheduled for Dec. 4.

“If protest votes are ‘a thing,’ then the next opportunity for the electorate to express how fed up they are with conventional politics” is for the Italians, Kit Juckes, a London-based strategist at Societe Generale SA, wrote in a note to clients.
“The Italian referendum is probably more about votes in favor or against the establishment and that’s the risk for Renzi,” van Vliet said. “The current polls are pointing in the direction of a ‘no’ which you can probably explain from this anti-establishment perspective and that also presents a danger if you look at the elections next year in many euro-zone countries.”

Italy’s prime minister, Matteo Renzi, has stated that he will resign if he loses a referendum on constitutional reform, thus triggering an election. Then things will get interesting.

Renzi took power in an internal party coup, and has yet to face a general election. If he is forced to call one, the likely victor is the Five-Star Movement — which is basically just Trump with better jokes. It is committed to a referendum on the country’s membership in the euro. The chances of that resulting in a vote to stay in? Above zero, perhaps — but not by very much. Remember this is a country that has been so impoverished by the euro that it is poorer now than in 2000.
Next up France. It was already a done deal that National Front Leader Marine Le Pen would make the run-off for the presidential election next April and May. Her likely opponent is the center-right Alain Juppe — a politician who has been around so long, and has so much baggage, he is one of the few people in the world who could make Hillary Clinton look fresh and exciting.
If America has a rust-belt problem, so does France – except it’s is even worse. The country’s manufacturing base has been steadily hollowed out since it joined the euro. The result? Mass unemployment and stagnant wages. The conventional wisdom has been that while Le Pen can capture a protest vote, she will never actually win an election. That must surely be toast now — and her commitment to restoring the old French franc has been steadfast.

Anti-Euro parties like National Front and Five-Star Movement gaining power would mean the end of the Euro.
This doesn't even consider the elections next year in smaller nations like Austria and Netherlands.

Back in May, when Donald's Trump's victory in the U.S. presidential election seemed the remotest of possibilities, a senior European official took to Twitter before a G7 summit in Tokyo to warn of a "horror scenario".
Imagine, mused the official, if instead of Barack Obama, Francois Hollande, David Cameron and Matteo Renzi, next year's meeting of the club of rich nations included Trump, Marine Le Pen, Boris Johnson and Beppe Grillo.