Russia's ambassador to Poland refused to go to the Polish Foreign Ministry, where he was invited about the missile that violated Polish airspace
"Warsaw has not provided an evidentiary basis," - Sergei Andreev said.
Polish Foreign Minister Władysław Kosiniak-Kamysz said in response that further steps would be taken in this regard in the near future.
The minister called the Russian ambassador's decision erroneous: "This is an expression of contempt and we cannot remain indifferent to it," he said.