Ukraine latest as US senators raise 'deep concerns' on whether TikTok allows Russian 'pro-war propaganda'; shelling traps 77 miners in Donetsk region; UK's Ministry of Defence says Russia had probably renewed its efforts to advance south of Ukraine's eastern city of Izyum.

If you missed it earlier, here is a clip of Boris Johnson expressing hope that Ukraine will be able to host the Eurovision Song Contest next year. 

Ukraine won this year's contest, but the event's organisers said the 2023 edition could not go ahead in the war-torn country.

Here are the latest pictures coming out of Ukraine today as fighting in the east of the country intensifies. 

Three Russian missiles destroyed a fuel storage depot in the eastern Ukrainian town of Novomoskovsk today, the head of the regional administration said in an online message. 

Valentyn Reznichenko posted a picture of what he described as a large blaze at the depot. 

Novomoskovsk is located just to the north east of Dnipro, the regional capital. 

Mr Reznichenko later said that 11 people had been injured and one was in a critical condition.

Russia's economy may take a decade to recover from the crushing sanctions placed on the country following its invasion of Ukraine, according to a top banking executive.

Returning to pre-sanctions levels could take nearly 10 years as the nation remains cut off from half of its trade, said German Gref, the boss of Sberbank, Russia's largest bank.

Mr Gref estimated the countries who have severed ties with Russia were responsible for 56% of its exports and 51% of its imports, crippling the economy.

"This is a threat to 15% of the country's gross domestic product, the bulk of the economy is under the fire," said chief executive Mr Gref, speaking at Russia's annual international economic forum in St Petersburg.

Former British Military Intelligence Colonel and NATO planner Philip Ingram gives his analysis on the Donbas region of Ukraine.

Ukraine's defence intelligence directorate announced today that five Ukrainian civilians had been returned in a five-for-five prisoner swap with Russia.

It did not say whether the exchanged Russians were combatants.

The directorate said four of the five Ukrainian civilians had been taken prisoner during Russia's occupation of parts of Kyiv region, from where Russian forces withdrew at the end of March.

It added that the dead body of a Ukrainian civilian was recovered in the exchange.

Lithuanian authorities said a ban on the transit through their territory to the Russian enclave of Kaliningrad of goods that are subject to EU sanctions will take effect from today.

News of the ban came yesterday via a video posted by the region's governor Anton Alikhanov.

The EU sanctions includes coal, metals, construction materials and advanced technology.

Mr Alikhanov said the ban would cover around 50% of the items that  Kaliningrad imports.

Its immediate start was confirmed by the cargo arm of Lithuania's state railways service in a letter to clients following "clarification" from the European Commission on the mechanism for applying the sanctions.

A spokesman for the service confirmed the contents of the letter but declined to comment further.

President Volodymyr Zelenskyy has paid another visit to troops on the front lines of Ukraine's war against Russia where he praised soldiers as brave and hard-working and vowed the country will prevail. 

A video posted to the Ukraine leader's official Telegram account today showed the president in his trademark khaki t-shirt, handing out medals and posing for selfies with the troops in what appeared to be an underground shelter in the southern Mykolaiv region. 

The president's office did not say when he made his latest trip to see troops. 

"Our brave men and women. Each one of them is working flat out," Mr Zelenskyy said in the video. "We will definitely hold out! We will definitely win!"

Mr Zelenskyy has remained mostly in Ukraine's capital Kyiv since Russia invaded the country on 24 February. 

However, in recent weeks he has made unannounced visits to the northeastern city of Kharkiv, where there had earlier been intense fighting, and to two eastern cities close to where battles are being fought.

Several Russian missiles have struck a gasworks in the Izium district in eastern Ukraine, Kharkiv region governor Oleh Synehubov said today.

"A large-scale fire broke out, rescuers localised the fire," he wrote on the Telegram messaging app, adding that some other buildings had also been damaged.

Earlier, Britain's defence ministry said Russia has probably renewed its efforts to advance south of Ukraine's eastern city of Izium in the last 48 hours.

Its goal is to penetrate deeper into the Donetsk region and envelope the pocket around the embattled city of Sievierodonetsk from the north, it said on Twitter.

Ukrainian governor Russia is sending a large number of reserve troops to Severodonetsk from other battle zones to try to gain full control of the frontline eastern city, the governor of Ukraine's Luhansk region has said.

"Today, tomorrow, or the day after tomorrow, they will throw in all the reserves they have... because there are so many of them there already, they're at critical mass," Luhansk regional governor Serhiy Gaidai said on national television. 

He said Russian forces already controlled most but not all of Severodonetsk.

The Russians have used artillery to blow out three bridges which link it to Ukrainian-controlled territory in Severodonetsk. 

The city is now cut off from all forms of road transport and many have predicted a full Ukrainian withdrawal.

Meanwhile, much concern has been expressed about the 500 or so civilians taking shelter in Severodonetsk's giant Azot chemical plant. It is one of the largest such facilities in Europe, manufacturing fertiliser, methanol and household chemicals.