According to Crypto Rover, Bitcoin dominance has surged to new cycle highs following recent U.S. military strikes on Iran (source: @rovercrc, June 22, 2025). This sharp increase in BTC dominance signals heightened risk aversion among crypto traders, who are reallocating capital from altcoins into Bitcoin for perceived safety during geopolitical instability. Historically, rising Bitcoin dominance often leads to temporary underperformance in altcoins, suggesting traders may favor BTC-focused strategies until volatility subsides. Monitoring the BTC.D chart and macro events is crucial for short-term crypto trading decisions.