The Polish authorities have been involved in provocations against Russia for years and Moscow has every right to cut ties with Warsaw in response, according to the diplomat.
"[But] who is the first to suffer from such decisions? People, citizens, and I am now not talking about Poland's citizens, many of whom understand well what is happening now. I am talking about our citizens who live, work there and who have families," Zakharova told the Rossiya 1 broadcaster.
Russia's diplomatic presence in Poland is also important as regards the memorial activity there since Russian diplomats have to look after the Soviet memorials especially amid increasing number of cases of vandalism in the country, the spokeswoman added.
On Saturday, Warsaw mayor's office officials, accompanied by Polish police, arrived at the Russian embassy's school building and stormed the premises after breaking the door, with the Polish authorities telling the school's employees to vacate the building.
The Russian Foreign Ministry pledged a "harsh reaction and consequences for the Polish authorities and Polish interests in Russia" in response to "such an insolent move."