According to Fox News, major U.S. cities have increased security measures following airstrikes on Iranian nuclear facilities. This escalation in geopolitical tensions is causing heightened volatility in cryptocurrency markets, with Bitcoin (BTC) and Ethereum (ETH) experiencing increased trading volume as investors seek hedges against global uncertainty. Traders should monitor news developments closely, as further instability could drive rapid price swings and impact liquidity across digital asset exchanges (source: Fox News).