The reason I agree with Boris Johnson would be the time in which he said that. Now, is now and the reality is different.

Why?

E+mc2

Think again, if possible.

Come on down from the cloud you are on, far away in old Moscow, come away and take your place, the frontline is waiting, the danger is not so bad, off to war, I take that back, I take back the body bags, the lifeless bodies of the dead, dust and ashes, beheaded heads.