The core of the statement, that Switzerland froze the assets of Venezuelan President Nicolás Maduro, is unequivocally confirmed by the most authoritative source provided: an official press release from the Swiss Federal Council. This primary source directly announces the action. This fact is further corroborated by a secondary news source. The second part of the statement, specifying the freeze was for a period of four years, is supported by a news brief from a lower-authority source (a cryptocurrency exchange's website). While the more credible sources confirm the freeze, they do not mention the duration in their summaries. There is no contradictory evidence among the relevant sources. The high-authority confirmation of the main action makes the overall statement very likely to be true, with a slight reduction in certainty due to the weaker sourcing for the specific time frame. The majority of the provided sources were irrelevant to the claim and were disregarded in the assessment.