Ukraine's top economic advisor criticizes Western countries for buying Russian oil, stating that the funds are used to finance the Kremlin's war machine.

• On Monday, Ukraine's president's top economic advisor told CNBC that Western countries should stop importing Russian oil and gas.
• Oleg Ustenko stated that the transactions Moscow is using to fund its invasion of Ukraine are "bloody money."

On Monday, Oleg Ustenko, Ukraine's president's top economic advisor, told CNBC that Western countries should stop buying Russian oil and gas, as these transactions are "bloody money" that aid Moscow in financing its invasion of Ukraine.

Ustenko stated in an interview with CNBC's Steve Liesman that whoever is purchasing oil and gas from Russia is also responsible for financing their aggressive military actions, as reported on "Closing Bell" on Monday.

Ustenko stated that Russia's invasion of Ukraine, which has been ongoing for two weeks, is causing "terrible, Dark Ages things" in his country. He emphasized the importance of cutting off Russia from its "bloody money receipts" and believed that implementing an embargo would significantly harm the Russian economy.

Zelenskyy has called for a more expansive response to the Russian invasion, and Ustenko, who has been an advisor to him since May 2019, has also commented on the matter.

In his interview with CNBC, Ustenko presented a challenging humanitarian and economic outlook. Although he stated that the Ukrainian government has fulfilled its social responsibilities, such as paying the salaries of teachers, Ustenko revealed that preliminary estimates suggest that the country has sustained damages of approximately $100 billion.

In 2021, Ukraine's economy, with a GDP of $200 billion, was heavily influenced by agriculture. This is a crucial period for Ukrainian farmers, as they typically begin spring fieldwork for key crops in April, according to Ustenko.

Ustenko stated that it is a brief period when they can perform that type of work. If they cannot, it will result in a significant decline in the economy.

Ukrainian producers dominate nearly half of the global sunflower oil market, according to Ustenko. Additionally, Ukraine is a significant producer and exporter of wheat and corn.

Ukraine's agricultural production is mostly exported globally, but fortunately, the country has enough wheat and grain reserves to feed its population for the next year.

He stated, "We will cease exporting from the country."