Prime Minister Boris Johnson said Britain and its allies would unleash a massive package of economic sanctions to hobble the Russian economy after the Kremlin launched an all-out invasion of neighbouring Ukraine on Thursday, APA reports citing Reuters.
Western nations are expected to announce coordinated sanctions after earlier this week imposing a limited initial package that was criticised by some as a weak response to Russia's recognition of two breakaway regions in Ukraine.
"Today, in concert with our allies, we will agree a massive package of economic sanctions designed in time to hobble the Russian economy," Johnson said in a televised address to the nation.
He said the West must end its reliance on Russian oil and gas which had given Russian President Vladimir Putin a grip over Western politics.
"Our mission is clear: diplomatically, politically, economically, and eventually military, this hideous and barbaric venture of Vladimir Putin must end in failure."
In earlier comments on Twitter, the British leader called the invasion a "catastrophe" for Europe, and said he would talk to other G7 group of rich nations.