It once happened on the night of Tisha B'Av that Napoleon was walking through the streets of Paris. He came upon a synagogue. From inside came the sounds of lamenting. Napoleon told his servant to go inside and bring him the president of the synagogue. After some moments the servant returned with the president.
Consolation is only for the bereft.
There is no consolation for Tisha B'Av because the potential to have everything that we lost is still very much alive. The Holy Temple will be rebuilt. Its Builder lives and endures and His People survive as everlasting witnesses to this fact. It is always read on the Shabbos before Tisha B'Av. The ninth of Av wasn't always a day of tragedy.