Kyrylo Shevchenko called for an extensive list of extra sanctions, from cutting card payments to suspending Russian access to the IMF.

Every day that sanctions are delayed “is costing the lives of civilians and children”, he said in an interview.

For security reasons, he answered questions sent by email.

Mr Shevchenko, Governor of the National Bank of Ukraine, said that Russia should eventually be made to pay to repair the damage caused during the invasion.

“The need for money will be huge,” he told the BBC. “It could be fulfilled through loans and grants from multinational organisations and direct help from other countries. However a large share of financing is needed to be obtained as a reparation from the aggressor, including funds that are currently frozen in our allied countries.”

Calls for a detailed list of extra sanctions

Mr Shevchenko welcomed the financial sanctions already imposed by the international community, but said the world should go much further. He called on governments, institutions and companies to impose an extensive list of further financial sanctions, targeting every corner of Russia’s economy.

He called on:

“We already see the effect [of sanctions] on the aggressor’s financial system, but we are still waiting for more to be done. I would like to underline that every day that sanctions are delayed is costing the lives of civilians and children,” Mr Shevchenko said.

Central bankers normally target inflation.

What is clear from the testimony of the Ukraine’s version of Andrew Bailey is that in this war they are leaving no stone uncovered in their targeting of the Russian financial system.

Every pipeline of cash into the “aggressor” has been identified, even as Mr Shevchenko’s team tries to keep the cash flowing in the Ukrainian financial system and to its millions of refugees, and even set his country’s monetary policy from a bunker.

The IMF, the Bank for International Settlements, Western Union, Chinese credit card payment systems, former Soviet nations’ use of Russia’s payments system, all are the subject of Kyiv’s lobbying to subject the Russian financial system to an unprecedented squeeze.

Above all, that targeting of Russia’s Central Bank, agreed by G7 nations, has disarmed its warchest of foreign exchange reserves and halved the value of the rouble.

Donations top $350m (£280m)

11bn hryvnia ($350m, £280m) has been paid in to the two special accounts set up by the National Bank of Ukraine to receive donations for the military and for humanitarian causes, Mr Shevchenko told the BBC.

The account for the military was set up on 24 February to accept international and local donations in multiple currencies.

A similar account for humanitarian purposes was set up on 1 March.

Oil embargo

Western countries have wrestled with the difficulties of suspending purchases of Russian energy. While the cash Moscow receives for oil and gas exports is a vital lifeline, European governments have decided that they can’t live without vital Russian supplies, at least for now.

Mr Shevchenko said: “Today we can see that Russia is using its energy resources capacities to put economic pressure on Europe. Energy is also one of the leading narratives in the Russian media. They are using it to misinform the Russian public about the West’s unwillingness to take tougher measures, out of fear of losing access to Russian oil and gas.

“We realise how difficult this decision is for our Western partners. We understand the cost of such a step. But we must work together to find and use all possible tools to stop the killing and the suffering that Russia is increasingly causing in Ukraine.”

Keeping Ukraine going

Mr Shevchenko also described some of the challenges of keeping the country’s financial system running during a war.

His staff are working round the clock, he said, many sheltering from bombardment in underground bunkers.

But he said electronic payments and ATMs were still working, and cash was being delivered to everywhere but active combat zones.

“I can proudly say that Ukrainian banking system remains stable and liquid even under martial law.”

“This is extremely difficult time for every Ukrainian – for the people and the country,” he said. “The National Bank of Ukraine is doing everything in its power to support Ukraine, its defenders, and the population affected by Russian aggression.”