International cooperation among banking supervisors is becoming harder as financial risks grow more interconnected, Basel Committee on Banking Supervision Chair Erik Thedéen said. He warned that fragmented oversight could widen information gaps, increase regulatory arbitrage and make risks spanning jurisdictions harder to identify and manage. Thedéen also stressed the importance of independent central banks as US President Donald Trump’s administration has tested the independence of the Federal Reserve. He said geopolitical tensions could complicate coordination on risks including artificial intelligence and responses to a future financial crisis. The Basel Committee led the post-financial crisis overhaul that produced the Basel III framework, which increased banks’ capital and liquidity requirements. The US has not fully implemented the final Basel III reforms; regulators withdrew an earlier proposal after industry opposition and published a revised draft in March.