Ukrainian president Volodymyr Zelensky has announced personnel changes are being carried out at senior and lower levels, following the most high-profile graft allegations since Russia’s invasion that threaten to dampen Western enthusiasm for the Kyiv government.

Reports of a fresh scandal in Ukraine, which has a long history of shaky governance, come as European countries bicker over giving Kyiv German-made Leopard 2 tanks.

“There are already personnel decisions - some today, some tomorrow - regarding officials at various levels in ministries and other central government structures, as well as in the regions and in law enforcement,” Mr Zelensky said in his nightly video address on Monday.

Mr Zelensky, who did not identify the officials to be replaced, said his plans included toughening oversight on travelling abroad for official assignments.

Several Ukrainian media outlets have reported that cabinet ministers and senior officials could be sacked imminently.

This comes after anti-corruption police on Sunday said they had detained the deputy infrastructure minister on suspicion of receiving a $400,000 kickback over the import of generators last September, an allegation the minister denies.

A newspaper investigation accused the defence ministry of overpaying suppliers for soldiers’ food. The supplier has said it made a technical mistake and no money had changed hands.

The Covid-19 pandemic led to the first drop in the known number of human-trafficking victims in 20 years as trafficking opportunities and policing were reduced, but the Ukraine war has probably now caused a new surge, a UN report said.

The number of detected trafficking victims fell 11 per cent in 2020, the most recent year for which data is available in most countries, the United Nations Office on Drugs and Crime (UNODC) said in its seventh Global Report on Trafficking in Persons.

Conflicts tend to increase trafficking and the war in Ukraine is unlikely to be an exception, it added.

Ukraine’s deputy prosecutor general has been sacked by Volodymyr Zelensky, becoming the latest in a purge of officials over corruption claims.

The president threatened jail time for grafting officials as he announced that he would be clearing out the government ranks.

Deputy prosecutor general Oleksy Symonenko follows Kyrylo Tymoshenko, deputy head of Ukraine’s presidential office, and Vyacheslav Shapovalov, deputy defence minister, out the door.

A letter announcing Mr Symonenko’s departure said he left “according to his own wish”.

Ukraine’s deputy defence minister has resigned, citing “media accusations” of corruption that he and the ministry say are baseless.

A statement on the defence ministry’s website said that Vyacheslav Shapovalov’s resignation was “a worthy deed” that would help retain trust in the ministry.

Mr Shapovalov was responsible for supplying troops with food and equipment.

His resignation follows that of Kyrylo Tymoshenko, deputy head of Ukraine’s presidential office.

The deputy head of Ukraine‘s presidential office, Kyrylo Tymoshenko, said he has asked President Volodymyr Zelensky to relieve him of his duties.

“I thank the President of Ukraine Volodymyr Zelensky for the trust and the opportunity to do good deeds every day and every minute,” Mr Tymoshenko wrote on the Telegram messaging app. The aide had been one of the leading social media presences getting the Ukraine government’s line across to the public.

Mr Tymoshenko gave no reason for his resignation. Ukrainian media had reported that Tymoshenko might be part of the personnel shake-up Mr Zelensky announced.

Mr Zelensky said on Monday that personnel changes would be announced this week in the government, the regions and in the security forces after allegations of corruption nearly a year into Russia’s invasion.

Boris Johnson has urged western allies to give Ukraine “all the help that they need” to defeat Russian military forces, just a day after his surprise visit to the country.

In an editorial renewing his support for the war-torn nation, the former prime minister writes: “Look at those brave Ukrainians and answer me this question: just what the hell are we waiting for?”

Mr Johnson positioned himself as a key ally of Kyiv during his time at No 10 and has consistently called for further military support for Ukraine.

Boris Johnson made a surprise visit to Kyiv and the towns of Bucha and Borodyanka, where he witnessed the destruction left after the Russian occupation in March last year, including massacres of civilians. Sean O’Grady looks at why.

To be fair to Johnson, he was one of the first Western leaders to comprehend the menace of Russian intentions towards Ukraine, and was a driving force in delivering assistance after the invasion last February.

A Downing Street spokeswoman said on Monday: “The Prime Minister spoke to the Irish Taoiseach Leo Varadkar this afternoon.

“The leaders reflected on the close relationship between the UK and Ireland, and the Prime Minister said it was clear both nations were highly aligned when it came to shared values and challenges. He pointed to cooperation on areas like research and development and offshore wind.

“The leaders discussed the invasion of Ukraine, and the Prime Minister updated on the UK’s plans to accelerate its support to help the country secure a lasting peace.

“They also discussed the Northern Ireland Protocol, and the need to find solutions to the problems being faced by communities in Northern Ireland. Both leaders reflected on the need for Northern Ireland to have a power-sharing government up and running as soon as possible.

“The leaders agreed to stay in close touch.”

When visiting Ukraine you would be forgiven for thinking that Johnson was still the British prime minister, writes Bel Trew.

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Following intense pressure from its allies, Germany appears to be inching toward approving deliveries of high-tech Leopard 2 main battle tanks that Ukraine and its biggest Western backers hope will boost Kyiv’s fight against Russian invaders.

Over the weekend German foreign minister, Annalena Baerbock, said Berlin would not get in the way if Poland — arguably Ukraine’s most vocal supporter among European Union neighbours — wants to ship Leopard 2 tanks from its arsenal across the border into Ukraine.

Germany is also not ruling out supplying such tanks to Ukraine itself now, cautioning however that the implications of such a step need to be carefully weighed.

Here’s a look at what those tanks might mean for Ukraine’s defence against Russian forces — and hopes for driving them out.