President Vladimir Putin warned the West on April 21 not to cross Russia’s “red lines”, saying Moscow would respond swiftly and harshly to any provocations and those responsible would regret it.
Russia's War Against Ukraine
Reuters: Putin warns West of harsh response if it crosses Russia’s ‘red lines’
Russian President Vladimir Putin delivers his annual state of the nation address at The Federal Assembly at The Manezh Exhibition Hall in Moscow on April 21, 2021.