The 2025 Corruption Perceptions Index reveals a global decline in public sector integrity, with the worldwide average dropping to its lowest level in over a decade. While Denmark continues to lead as the world's cleanest nation, established democracies like the United Kingdom and the United States have reached record-low scores due to political scandals and weakened oversight. In contrast, Estonia has emerged as a top performer by successfully consolidating its anti-corruption frameworks. The sources highlight how "cash-for-access" ventures and the influence of "big money" in politics undermine trust in government institutions. Furthermore, the reports warn that the erosion of justice systems, media freedom, and civic space directly fuels systemic bribery and state capture. Ultimately, these findings suggest that accountable leadership and independent checks are essential to prevent corruption from becoming a permanent feature of political culture.