It's not easy to flatten a place because people are surprisingly resilient, and the number of targets is almost infinite.

It has just been demonstrated in Lebanon.


Yes, a few places have been "flattened", more or less, in recent history. Hamburg. Dresden. Much of Hiroshima, Nagasaki and Tokyo. Most of Stalingrad in 1942. But it ain't easy...unless you use nuclear weapons. Then it is pretty easy, but the repercussions may not be so good.

Countries normally invade other countries looking for a quick, decisive victory. What they usually find instead is a long, painful occupation that slowly bleeds them dry and finally destroys their will to remain there.