The evidence strongly supports the core of the statement, which is that the price of Brent Crude oil increased as a direct result of U.S. sanctions on major Russian oil firms. This causal link is established by multiple high-authority sources.First, the action of imposing sanctions is unequivocally confirmed by primary sources from the U.S. Treasury Department. These press releases verify that the U.S. did, in fact, sanction major Russian oil companies.Second, the effect of a price increase is corroborated by highly credible financial news outlets. A Reuters report explicitly states that oil prices climbed and lists "Russia sanctions" as a key driver. A Guardian article similarly reports that oil prices "rose sharply" in immediate response to the sanctions. This demonstrates a clear and reported link between the sanctions and a subsequent price hike.The only point of contention is the precise magnitude of the increase. The statement claims a 5% increase, whereas one of the most specific primary sources, a Reuters report, quantifies the immediate climb at 2%. While this contradicts the exact number in the statement, it does not invalidate the statement's central claim that a significant price increase occurred due to the sanctions. The raw data sources (EIA, FRED, Trading Economics) would be needed to verify the exact percentage change over a specific period, but the journalistic sources already confirm the direction and a significant magnitude.Therefore, the statement is assessed as "likely_true" because it correctly identifies the cause (sanctions) and the effect (a price increase). The inaccuracy regarding the specific percentage (5% vs. a reported 2%) makes the statement imprecise but does not render its fundamental assertion false.