F inancial support to Ukraine from the United Kingdom is set to dry up by the end of the year, according to an anonymous source from the U.K. Ministry of Defense.

The U.K.'s new prime minister will need to make hefty financial contributions to Ukraine if the support is to continue flowing into the war-torn country next year, the Cabinet official told the Sunday Times. The U.K.'s prime minister, Boris Johnson, has been a big supporter of Ukraine, but he is set to leave office next week.

"This means that the new prime minister will very soon face the question of whether to commit billions of pounds of additional support at a time when the public finances are under intense strain," the source said of additional U.K. financial support for Ukraine.

UKRAINE NEEDS $9 BILLION IN FOREIGN AID PER MONTH, TOP ZELENSKY ADVISER SAYS

Though support for Ukraine generally remains high in the U.K., this support comes with conditions. Support for further sanctions against Russia is cut in half if it means a rise in energy costs, with just 38% supporting the financial backing, a YouGov poll of 1,714 adults in Great Britain conducted June 8-9 with an unknown margin of error found. This means that 45% of U.K. respondents would oppose further sanctions in such a situation, a nearly sixfold increase. The other 17% of participants were undecided on the matter.

Those "very" worried about the conflict have been cut in half since February, with just 22% expressing they are "very" worried in June, further hinting at a waning interest in the war. Inflation and soaring gas prices due to the war are likely to increase opposition to financial support further.

Notably, 44% of the U.K. would support more sanctions against Russia even if it led to a fuel shortage, while only 38% would oppose them. The number becomes split, at 42% to 42%, when asked if they would continue to support sanctions against Russia if it led to an increase in the cost of living.

CLICK HERE FOR MORE FROM THE WASHINGTON EXAMINER

Johnson visited Kyiv on Ukraine's independence day to reaffirm the U.K.'s support for the embattled country. Though he urged U.K. citizens to "endure" rising energy costs and claimed that Western unity and support for Ukraine were "growing," more reports are showing a marked decrease in support among Western nations, the BBC noted.