Volodymyr Zelenskiy says new sanctions on Russia ‘not enough’ to prevent more deadly attacks as citizens in the east of the country urged to flee

• Russia-Ukraine war: latest updates

Ukraine president Volodymyr Zelenskiy said the new package of western sanctions against Russia is “not enough” and without more painful measures and supply of weapons, Russia will view the actions as permission to launch a new bloody attack. In his daily address on Thursday, he called for the democratic world to reject Russian oil and completely block Russian banks from the international finance system, after the US, UK and EU unveiled new sanctions against Moscow.

US sanctions target Russian banks and elites, and include a ban on any American from investing in Russia as well as sanctions on Putin’s adult daughters. The UK is collaborating with the US on asset freezes against Russian banks and banning all new outward investment to Russia. The EU announced a wide-ranging package of sanctions, including import bans on coal and transaction bans on banks.

Nato’s foreign ministers will meet in Brussels on Thursday for two days of talks on bringing an end to the war.

Hungary’s right-wing, Putin-allied prime minister Viktor Orbán gave a press conference in which he said he had offered to broker talks with Russia. He offered to work towards a ceasefire, while stopping short of agreeing to extend EU sanctions against Russia’s oil and gas shipments.

Zelenskiy said Kremlin forces were trying to cover up evidence of atrocities. “We have information that the Russian military has changed its tactics and is trying to remove people who have been killed from streets and basements ... this is just an attempt to hide the evidence and nothing more,” he said Thursday, but did not provide evidence.

Russia’s military has now shifted its focus to the east of the Ukraine, with Ukraine authorities in Luhansk and Donetsk warning that civilians should leave as quickly as possible. It comes as western officials say Russia’s retreat from around Kyiv and the north east of the country is now “largely complete” and that it will take “at least a week” before reconstituted units could go to Donbas and perhaps longer.

Russia is hiding ‘thousands’ killed in Mariupol, Zelenskiy said. Russian forces are blocking humanitarian access to the besieged port city of Mariupol because it wants to hide evidence of “thousands” of people killed there, the president said.

More than 5,000 civilians, including 210 children, have been killed in Mariupol since the start of Russia’s invasion, the mayor of the besieged city said. Vadym Boichenko said 90% of the city’s infrastructure has been destroyed and Russian forces have targeted a hospital where 50 were burned to death. Russian attacks on the port city have obstructed access to food and supplies and Red Cross humanitarian convoy has been unsuccessful in getting in.

Ukrainian soldiers are being trained in the US to operate deadly Switchblade drones that Washington is supplying to Kyiv, the Pentagon said Wednesday. Defence department spokesman John Kirby said it was a “very small” number of Ukrainian troops who were already in the US before Russia invaded their country.

Britain is drawing up plans to send armoured vehicles to Ukraine, according to The Times. Options include sending a protected patrol vehicle, such as the Mastiff, or a vehicle like the Jackal, which can be used as a reconnaissance or long-range patrol vehicle, a ministry of defence report said.