Bitcoin dropped as much as 4.2% to $62,938, and Ether slid 5% to $1,783 after Israel said it launched a preemptive strike on Iran.About $128 billion in crypto market value was wiped out quickly after the headline, based on CoinGecko data.Donald Trump posted an eight-minute Truth Social video saying the US was involved, and he said the goal was to remove what he called imminent threats from Iran.