In the hours after Russia launched a "full-scale invasion" of Ukraine early on Thursday, protesters took to the streets and decried President Vladimir Putin's actions.
Explosions have been heard across Ukraine - in the capital Kyiv, and in the cities of Kharkiv, Dnipro and Odesa - as Ukrainian President Volodymyr Zelenskyy cut diplomatic ties with Russia and declared martial law, while urging Ukrainians to remain calm and stay home.
Ukraine's health minister said 57 Ukrainians had died and 169 had been injured, hours after after Putin warned any countries who interfere or attempt to help Russia's neighbour would suffer "consequences you have never seen."
Messages of defiance, chants of "no war" and waving Ukrainian flags were seen across the world as many woke up to the news that troops had moved into the former Soviet state.
Many descended on Russian embassies and consulates in their respective countries, with images emerging of people burning Russian passports, while others waved placards with slogans likening Putin to Hitler.
Protesters chanted "Stop Putin" and "No To War," while others held signs showing acts of solidarity for the former Soviet state.
In Russia, human rights groups reported that hundreds of protesters had been detained in Moscow and St Petersburg over holding pickets against the war with Ukraine.
In the British capital, protesters marched to the gates of Downing Street holding placards showing Putin with blood on his hands and reading "Stop His War".
Numerous landmarks were lit up in the Ukrainian flag colours of yellow and blue on Thursday evening to show support to the Ukrainian people.
Downing Street was one which flew the Ukrainian flag and was lit up in yellow and blue in a gesture of solidarity.
St Georges Hall in Liverpool was also lit up in the same colours in an expression of solidarity with Ukraine following Russia's invasion.
Elsewhere, the Welsh government building in Cathays Park, Cardiff, and the Senedd in Cardiff Bay were lit in the flag's colour as a mark of unity.
The Brandenburg Gate in Berlin was also illuminated in the colours of Ukraine during a solidarity demonstration following the Russian invasion.
Meanwhile, protests were held across European nations such as Germany, Italy, Lithuania and Sweden, while Ukrainian communities in the US, Israel, and Lebanon also held their own demonstrations against Russian aggression.
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