Say what you will about Vladimir,but George Junior would refuse to go, and the right wing pundits would say how brave he was, lying on the ground in the fetal position sucking his thumb.
One interesting note, the attempt is supposed to bey by “suicide attackers”, and the Shia have not been doing suicide attacks. It’s more of a Sunni thing.
There are Sunnin in Iran, but they are typically not “Persian”, but Arab and other minorities, who are getting clandestine aid from the US (read Sy Hersh), so if this threat is real, and it could be an attempt by Putin to burnish his image with the Russian people, we would be in some way behind it, and Vladimir, ever the KGB agent knows this.