Tensions between the U.S. and Iran are escalating, leading to fears of potential large-scale retaliation from Iran if the U.S. launches new attacks. Iranian officials have warned that proxies could be directed to attack U.S. targets abroad, heightening concerns among U.S. allies about possible strikes. Israel has raised its embassy alert level in response to the increased risk of Iranian attacks, while reports indicate that Iran is plotting terror attacks across Europe and may target Israeli embassies. U.S. intelligence suggests that sleeper cells could strike American sites in Europe as proxies ramp up their activities.