Russia continues to consider Greece an "unfriendly country", while Moscow's "black" list is expanding. Denmark, Slovenia, Slovakia and Croatia are the countries that Vladimir Putin does not consider as friendly to Russia.

The Greek Foreign Affairs Ministry expressed "its deep regret" over the Russian government's decision on Monday to expel eight staff members of the Greek embassy and the consulate in Moscow as personae non gratae.

With the Greek economy betting heavily on this year's tourist season to boost government revenue and estimates in favor of increased tourist traffic, the government has set itself the goal of ensuring energy efficiency.