Volodymyr Zelenskyy said a week should be enough for the Belarusian leader, Alexander Lukashenko, to remove equipment from Belarus used by ⁠Russia in its attacks on ⁠Ukraine. “If he doesn’t do it, we’ll do it,” said the Ukrainian president, without elaborating. Zelenskyy said signal relay stations were located in two Belarusian regions bordering Ukraine that were used by Russian forces to help with attacks on Ukrainian civilians.

Ukraine has been beefing up its defences along its northern border after signs that Vladimir Putin may be trying to make greater use of Belarus in the conflict. Recent exchanges of threatening language between Kyiv and Minsk culminated in Lukashenko apologising to Zelenskyy for past remarks and saying Belarus wanted no part in the war. Zelenskyy said on Friday: “What’s the point of saying he [Lukashenko] doesn’t want to be in the war? Let him remove this equipment, let him switch it off. I think a week will be enough for him to do that.”

Zelenskyy also alluded to Belarus’s oil refining industry, saying it had become a major supplier ​for Moscow and that Lukashenko could put a stop to it. “Today he ‌is the main supplier, or one of ‌the main suppliers, for the Russian army. Specifically, Lukashenko, specifically Belarus,” he said. “Can this be stopped? I’m sure it’s within his power. And he’s the one controlling ‌it.” Ukraine has been intensifying its attacks on the Russian oil sector as part of efforts to put pressure on Russia’s war capability after more than four years of conflict.

EU chief António Costa on Friday defended diplomatic outreach by his office to the Kremlin, saying the bloc needed to “listen” to Moscow, despite pushback from some member states. “It is precisely because we need also to support Ukraine through diplomatic means that we need to have a direct diplomatic channel with Russia,” Costa said after a summit of EU leaders. However, he said there were so far no “credible signs” that Russia wanted to engage.

Russia ⁠said on Friday it was open to dialogue with European countries but would not accept ultimatums. Kremlin spokesperson Dmitry Peskov said common sense dictated the need for such contacts because of the “enormous number” of complex issues on the agenda, but he said the Europeans needed to change their approach to Russia.

Meanwhile, the French president, Emmanuel Macron, told reporters on Friday that Europeans would be at the table when and if there were peace talks about Ukraine, stressing they were not mediators, because they were firmly on Ukraine’s side. But he also said the question was not who would negotiate on behalf of the EU with Russia, but to clarify and define the bloc’s position first.

Poland’s president, Karol Nawrocki, said he would strip Volodymyr Zelenskyy of the country’s top honour after the Ukrainian president caused outrage by renaming an army unit after the Ukrainian Insurgent Army (UPA) – nationalists who ⁠massacred Poles during the second world war. The decision ​could unleash a severe diplomatic crisis between the neighbours a few days ahead of a conference on Ukraine’s reconstruction in the Polish city of Gdansk. The Ukrainian foreign ⁠minister Andrii Sybiha said Poland had committed a “strategic” ⁠error that ‌ “only ​benefits ​Moscow”.

Russian shelling killed ⁠three civilians in Ukraine’s frontline city ⁠of Kramatorsk ⁠in ​the eastern Donetsk region, a local ⁠official said on Friday. Six ‌others had been injured in two attacks on the city, with strikes occurring ‌near a high-rise apartment building and a ​car park, said the governor ⁠of Donetsk region, ​Vadym Filashkin.

French authorities detained and charged a Belarus-born man on suspicion of spying for Russia on a French drone manufacturer, the Paris prosecutor’s office said. The 48-year-old was reportedly arrested on 3 June “while filming a drone prototype belonging to a company that supplies the French and Ukrainian armed forces”. France’s domestic intelligence agency found he “allegedly sent a video to a contact in Russia”.