Ukraineโs President Volodymyr Zelensky has invited Donald Trump to visit his country ahead of any deal with Russia to end the war.
โPlease, before any kind of decisions, any kind of forms of negotiations, come to see people, civilians, warriors, hospitals, churches, children destroyed or dead,โ Zelensky said in an interview for CBSโs 60 Minutes programme.
The interview was recorded before a Russian missile hit the city of Sumy, killing 34 people and injuring 117 others.
Russia said it only strikes military or military-related targets while Trump said he had been told it was a mistake, without specifying who told him.
Germanyโs chancellor-in-waiting, Friedrich Merz, has accused Russia of a war crime.
The attack comes as the US, Ukraineโs strongest military ally, has been pursuing an end to the war โ now in its fourth year โ through negotiation under Trump.
Asked about the attack, the US president said it was โterribleโ and that he had been โtold they made a mistakeโ, but did not elaborate.
Earlier, Trumpโs special envoy to Ukraine, retired Lt-Gen Keith Kellogg, said the attack had crossed โany line of decencyโ.
However, it remains to be seen if Trump will accept Zelenskyโs invitation.
Scott Bessent, the US treasury secretary, is the only senior member of Trumpโs team to visit Kyiv, and that was to demand Zelensky sign a contract heavily weighted in Washingtonโs favour to trade Ukraineโs mineral wealth for continued military aid. Zelensky refused.
The Ukrainian president has highlighted Russiaโs continued attacks on civilians while Trump attempts to improve relations with Moscow in search of a ceasefire.
US special envoy Steve Witkoff has already held three meetings with Vladimir Putin, and Kyiv is adamant Moscow will exploit this as it continues to erode Ukraineโs territory.
European leaders condemned the Sumy attack. Merz, who is expected to take over as Germanyโs new chancellor next month, told the countryโs public broadcaster ARD that the attack constituted a โserious war crimeโ.
โIt was a perfidious act.. and it is a serious war crime, deliberate and intended,โ the conservative politician said.
Germanyโs outgoing Chancellor Olaf Scholz, meanwhile, said the attack showed โjust what Russiaโs supposed readiness for peace [was] worthโ.
French President Emmanuel Macron accused Russia of โblatant disregard of human lives, international law, and the diplomatic efforts of President Trumpโ.
โStrong measures are needed to impose a ceasefire on Russia,โ he said. โFrance is working tirelessly toward this goal, alongside its partners.โ
Describing the attack as โbarbaricโ, European Commission President Ursula von der Leyen added: โRussia was and remains the aggressor, in blatant violation of international law.
โStrong measures are urgently needed to enforce a ceasefire. Europe will continue to reach out to partners and maintain strong pressure on Russia until the bloodshed ends and a just and lasting peace is achieved, on Ukraineโs terms and conditions.โ
British Prime Minister Sir Keir Starmer also gave a view, saying he was โappalled at Russiaโs horrific attacks on civilians in Sumyโ.
A spokesperson for UN Secretary-General Antรณnio Guterres said he was โdeeply alarmed and shockedโ to learn of the missile attack.
โAttacks against civilians and civilian objects are prohibited under international humanitarian law, and that any such attacks, wherever they occur, must end immediatelyโ, he added.
Guterres stressed the UNโs support for โmeaningful efforts towards a just, lasting and comprehensive peace that fully upholds Ukraineโs sovereignty, independence and territorial integrityโ.
Sundayโs double missile strike was the deadliest attack on civilians in Ukraine this year.
Another Russian missile attack, earlier this month on 4 April, killed 20 people and injured 61 in the city of Kryvyi Rih.
On that occasion, Russiaโs defence ministry said it had targeted a meeting of โunit commanders and Western instructorsโ in a restaurant. No evidence was provided.
It is estimated that hundreds of thousands of people โ the vast majority of them soldiers โ have been killed or injured on all sides since Russia launched a full-scale invasion of Ukraine on 24 February 2022.
The UN estimates that nearly seven million Ukrainians are currently living as refugees.
The conflict goes back more than a decade, to 2014, when Ukraineโs pro-Russian president was overthrown. Russia then annexed the Black Sea peninsula of Crimea and backed insurgents in bloody fighting in eastern Ukraine.