I cannot help but note that one reprisal begets another… forevermore. The US warns Iran and its proxies to not assault us or else suffer the consequences. But Syria does anyway. Then they are angered that the US responds, as promised. So, they fire more rockets at us in reprisal for our reprisal.
This is the sort of escalation that keeps feuds and hatred going for hundreds of years. Even when one terrorist regime is stopped, the next generation grows up to start it all over again.
Hatred and violence never make a positive combination and never will!