Elon Musk and David Sacks, both White House advisers, weighed in separately on the election in Eastern Europe.

"I officially ask the Constitutional Court to annul the Romanian presidential elections for the same reasons the December elections were annulled: external interferences by state and non-state actors,

Defeating populists never signals an easy return to the status quo ante.

George Simion will challenge the presidential election results at the Constitutional Court, accusing France and Moldova of interference.

Although Dan’s come-from-behind victory has halted Romania’s slide into autocracy for now, it does not resolve the deeper political crisis facing the country. Simion received 5.3 million of the 11.5 million votes cast.

George Simion, who was defeated in Sunday's presidential runoff, announced on Tuesday that he intends to appeal the results and seek the election's annulment, citing alleged 'external interferences,' notably by France.

Mr Simion had been the favourite to win but lost to pro-EU candidate Nicusor Dan in the final vote over the weekend.