Ukraine and Russia: What you need to know right now

* Russian forces are blowing up bridges across the Seversky Donets river to prevent Ukraine bringing in military reinforcements and delivering aid to civilians in the town of Sievierodonetsk, the governor of the Luhansk region said. * Russia's defence ministry said its forces shot down a Ukrainian military transport plane carrying weapons and munitions near the Black Sea port of Odesa.

Kyiv said on Saturday it was pushing back Russian troops in Sievierodonetsk as intense fighting raged around the industrial city, the focus of a Russian offensive to take the eastern Donbas region. FIGHTING * Russia has reinforced its troops and used artillery to conduct "assault operations" in Sievierodonetsk, but Russian forces retreated after failed attempts to advance in the nearby town of Bakhmut, Ukraine's military said. * Russian forces are blowing up bridges across the Seversky Donets river to prevent Ukraine bringing in military reinforcements and delivering aid to civilians in the town of Sievierodonetsk, the governor of the Luhansk region said. * Ukrainian forces have recaptured around 20% of the territory they lost in Sievierodonetsk during fighting with Russia, Luhansk governor Serhiy Gaidai said on Friday. * Britain's defence ministry said Russian air activity remains high over Ukraine's Donbas region with Russian aircraft carrying out strikes using both guided and unguided munitions. * In the southern region of Odesa a missile hit an agricultural storage unit, wounding two people, the regional administration's spokesman wrote on Telegram. * Russia's defence ministry said its forces shot down a Ukrainian military transport plane carrying weapons and munitions near the Black Sea port of Odesa. * Reuters could not independently verify battlefield reports.

DIPLOMACY * Ukraine said there was no point in negotiating with Russia until Moscow's forces are pushed back as far as possible towards Ukraine's borders. * French President Emmanuel Macron said it is vital that Russia is not humiliated so that when the fighting stops in Ukraine a diplomatic solution can be found, adding that he believed Paris would play a mediating role to end the conflict. * Japanese Prime Minister Fumio Kishida is leaning toward attending a summit of NATO leaders in late June to spur coordination with the West over Russia's invasion of Ukraine, Kyodo News reported, citing unnamed government sources. ECONOMY * A ship sent to load metal and ship it to Russia has entered the Ukrainian port of Mariupol, TASS news agency reported, the second vessel to arrive in the southeastern city since Russia completed its capture last month. * Russian President Vladimir Putin denied on Friday that Russia was preventing Ukrainian ports from exporting grain, saying the best solution would be to ship it through Belarus if sanctions on that country were lifted.

QUOTES * "Victory will be ours," said Ukraine's President Volodymyr Zelenskiy, speaking on Friday in a video address to mark 100 days of the war. (Compiled by William Mallard and Frances Kerry)