"The only thing that brings NATO 'close' to Russia now is that they both do not know what kind of policy Trump would pursue," the source said.
The source added that nobody could say definitely whether there would be any changes in NATO policy after Trump takes office.
Earlier in the day, the NATO-Russia Council (NRC) meeting at the level of permanent representatives to the alliance, the third such meeting this year, started in Brussels. The agenda of the council comprises the issues of European security, the situation in Ukraine and others.
Donald Trump, who beat Hillary Clinton in the November 8 presidential elections, has repeatedly noted during his public speeches and interviews that "it would be nice" to have a good relationship with Russia. He also has repeatedly said during his presidential campaign that Washington should review its relationships with NATO allies which do not contribute enough to the alliance.