Sharjah24 - Reuters: Tens of thousands of people across Europe marched in protest against Russia's invasion of Ukraine on Sunday, the fourth day of the biggest assault on a European state since World War Two.

More than 100,000 people gathered in central Berlin, carrying signs reading: "Stop the War", "Putin's last war" and "We stand with Ukraine" along with Ukrainian and European Union flags.

Train and underground service was interrupted in some parts of the German capital as thousands flooded toward the Brandenburg Gate, near the Russian embassy.

The protest came as missiles rained down on Ukrainian cities and thousands of Ukrainian civilians, mainly women and children, were fleeing from the Russian assault into neighbouring countries.

"Ukrainians: You're welcome here!" shouted one of the speakers in Berlin as the crowd cheered.

More than 368,000 refugees, mainly women and children, have fled the fighting into neighbouring countries, the U.N. refugee agency said on Sunday, citing data provided by national authorities.

Around 80,000 protesters thronged Prague's central square, with the Czech prime minister telling the crowd the country still remembered its own terror of Russian tanks rolling into the capital more than five decades ago.