In the second aliyah of Parshas Vaeschanan, we read the portion of the Torah that was read on Tisha B'av. At first glance, it seems surprising that the reading about our corruption and leaving Eretz Yisroel should be read on Shabbos Nachamu. However, the aliyah continues describing our return to the land through teshuva. Although we mourn the terrible destruction that had to happen, in its place, we can rebuild in a stronger way than before. Hashem promises us that we will never be completely lost, and will always come back to Him. This is the greatest consolation, even amidst the destruction.