An Isle of Wight man living in Ukraine has called on the "world to do more", saying western leaders are "talking tough but doing very little".
Daniel Williams, who is originally from Wootton, is leaving the country along with his wife and young daughter.
The businessman plans to head to neighbouring Poland. With air raid sirens blaring, he posted a video update from a packed train station.
He said Ukrainian forces had gone from carriage to carriage, removing men aged 18 to 60, to fight. He said some people were taken from the train at gunpoint.
Mr Williams, 45, moved to the country for work and currently lives in Kyiv with his family.
He has questioned the west's response to Russia's invasion, saying they're "talking tough but doing very little". He said:
"Right now, there is confirmed reports inside Ukraine that the Russians have taken control of Chernobyl and radiation levels are increasing.
"A simple question to Boris Johnson, Joe Biden, Macron and all the leaders that are talking tough. When exactly does this become a threat to NATO? When exactly does the world do something about this?"
Mr Williams has previously said he plans to return to the country and stands by Ukraine.
Alyona Shevtsova, an adviser to the commander of Ukraine's Ground Forces, wrote on Facebook that the staff at the Chernobyl plant had been "taken hostage".
A barrage of sanctions have been put in place on Russia by the UK, with more planned.
Armed forces minister James Heappey says the Prime Minister is exploring all options to support the Ukrainian people over the coming days.
But he reiterated the UK will not send soldiers to the front line because it would setup a possible conflict with another nuclear country:
What is the latest in Ukraine?
The Ukrainian capital of Kyiv is preparing for an onslaught from Russian troops - with its mayor saying the city has entered a "defensive phase".
Tanks have been seen just a few miles from the centre and people have been told to stay at home.
There are concerns Moscow is planning to overthrow the government.
Ukraine's president Volodymyr Zelenskyy has criticised the response from the west and wants allies to go further than the sanctions that have already been announced.
But there is a glimmer of diplomatic hope - as the Kremlin says Vladimir Putin is ready to send a delegation to hold talks with Ukrainian officials.
Meanwhile, the country's neighbour, Poland, is preparing to close its airspace to Russian aircraft from midnight.
The Pope has taken the unusual step to intervene - visiting the Russian embassy in Rome to express his "concern" about the war.
Elsewhere, an F1 race and the Champions League final have been stripped from Russia - and Manchester United have cut ties with airline sponsors Aeroflot.