Calin Georgescu, a far-right Nato-sceptic who has previously praised Vladimir Putin, was almost unknown in Romania until he won the first round of voting in the presidential elections two weeks ago.

Now Romanian intelligence says his sudden and surprise surge in popularity is down to a "highly organised" and "guerrilla" campaign on social media, sharing identical messaging and using influencers.

They say it was conducted from "external locations" to bypass controls.

A separate intelligence assessment says that Romania has been identified as an "enemy state" by Moscow and a priority target for what it calls "aggressive hybrid actions".

https://www.bbc.co.uk/news/articles/cgq18w507dko