Peace can only come by a ferocious war between heaven and hell. At the first hour, the Father sacrificed His Son At the second hour, Mary will sacrifice her priest son. She revealed this to the Fatima children. (July 13, 1917).
The vision sees the city in half ruins. Hell will have already poured out some of its fury. Yet, the bishop dressed in white leads a pilgrimage of intercession. The completeness of the annihilation (all are killed) is like the Lamb who was slain.
With Divine Justice being satisfied (even at such a price), the Father can begin to send wave after wave of mercy (as at the first hour). However, unlike that first hour, the whole world will immediately know of these deaths that have changed history.
Those with faith will see the fulfillment of the Fatima prophecy. This second hour will produce a slow but inevitable victory. Before and after this second hour, much will happen and many events will be destructive.