The war in Ukraine is entering a “decisive phase”, with Vladimir Putin’s launch of a new ballistic missile showing that the threat of global conflict is “serious and real”, Poland’s prime minister has said.

Recent events show that there is a real risk of a global conflict breaking out, Polish Prime Minister Donald Tusk said on Friday, after Russia fired a hypersonic intermediate-range ballistic missile at a Ukrainian city.

Russia's Foreign Ministry has condemned the opening of a US missile defence base in Poland, labelling it a provocation and threatening a possible strike against the facility. In response, Warsaw dismissed Moscow's claims as inadequate.