Poland's president condemned "an unprovoked and unjustified Russian attack" on Ukraine after Moscow announced a military operation against its southern neighbour in the early hours of Thursday morning, APA reports citing Polskieradio.
Russian President Vladimir Putin authorised a special military operation against Ukraine to eliminate what he said was a serious threat against his country, the Reuters news agency reported.
In a tweet early on Thursday, Polish President Andrzej Duda said: "Despite the efforts of the international community, Ukraine has fallen victim to a brutal, unprovoked and unjustified Russian attack."
He added: "We are working together with our allies from NATO and the EU. We will jointly respond to Russia's brutal aggression and will not leave Ukraine without support."
Duda said in a separate tweet that Russia's invasion of Ukraine "is an unprecedented violation of international law" and that Russia "has excluded itself from the international community."
"Today at 5:48 a.m. I spoke with Ukrainian President Volodymyr Zelenski," Duda said. "Russia has invaded Ukraine, moving forward with what appears to be a large-scale attack. This is an unprecedented violation of international law. Russia has excluded itself from the international community."