After 334 years, the 2nd Holy Temple in Jerusalem (see "Today in Jewish History" for Adar 3) was in disrepair. In the year 19 BCE, King Herod I floated the idea of rebuilding and renovating the Temple. Though many Jews were wary of Herod’s motives, the renovation was completed eight years later. The new structure was magnificent, causing the Talmud to state: "He who has not seen Herod's edifice has not seen a magnificent edifice!"
Link: Herod the Great
On the afternoon of 12 Adar II 5752 (March 17, 1992), a pickup truck loaded with explosives smashed into the front of the Israeli Embassy and detonated. The embassy, a church, and a school were destroyed. The blast killed 29 and wounded 242.
The Rebbe describes the following as a core teaching of the Baal Shem Tov:
Not only are the pirouettes of a leaf as it falls off a tree,
the quivering of a blade of grass in the wind,
and all the details of the world around you
all brought into being, given life and directed every moment from Above—
but beyond that:
Every nuance is an essential component of a grand and G‑dly scheme, the gestalt of all those vital minutiae.
Every moment burns with the pulse of G‑d’s desire.
Meditate on this. And then think:
How much more so the details of my daily life.