The latest example of this took place on Friday when military aircraft with Swiss fighter jets shadowed a Russian government aircraft over the European country, Russian Foreign Ministry spokeswoman Maria Zakharova said Saturday.

As a result, Moscow asked the Swiss government for an explanation for the deployment of fighter jets to meet a Russian special flight airplane carrying journalists, and Alexander Fomin, the director of the Russian Federal Service for Military-Technical Cooperation to a summit of the Asia-Pacific Economic Cooperation (APEC) in Peru, saying it is particularly concerned by how perilously close the warplanes shadowed it. 

In a broadcast on the Rossia 24 TV channel, Russian Foreign Ministry spokeswoman Maria Zakharova issued the following statement: "I will stress one more time that a rather close distance, to which these fighter jets had approached [the Russian plane], has caused serious concerns of the passengers of the Russian aircraft. We have not left unnoticed the media reports on the issue and our embassy in Switzerland has already requested explanations of the Swiss side. We are expecting the explanations and will respond in an appropriate manner after we will receive them."