Warsaw’s Foreign Ministry summoned the Russian ambassador to Poland Sergei Andreyev on Monday, over the referenda in the Lugansk and Donetsk People’s Republics, Zaporozhye and Kherson.

Footage shows Andreyev arriving at the ministry and talking to journalists after his meeting with Deputy Minister of Foreign Affairs Marcin Przydacz.

"I heard the position of the Polish side," Andreyev told them. "As a reaction, I handed Mr Deputy Minister Przydacz the text in Polish of the speech made by the president of the Russian Federation on Friday."

"The basis of our actions is absolutely in line with international law," he continued. "The United States is very capable of disciplining its so-called allies," he continued, suggesting Washington was behind the summons

Meanwhile, Polish Foreign Ministry spokesperson Lukasz Jasina explained his department's position.

"[It was] to tell him what our attitude to this state policy is this week, to crimes committed by Russia, to aggression, to threats against the world. And I think there are enough reasons to talk to the ambassador," he said.

Earlier, on September 30, President Vladimir Putin agreed to sign documents allowing the accession of the Donetsk and Lugansk People’s Republics, as well as the regions of Kherson and Zaporozhye, to the Russian Federation.

According to Moscow, the move followed referenda in which people living in those areas exercised their right to self-determination and requested to join Russia.

Ukraine and its international allies condemned the move, calling it annexation of Kiev’s sovereign territory.