Bah!
"The images of neighbourhoods across Europe reduced to rubble due to wartime air raids are a lasting reminder of the destruction that can be caused by man-made explosions."
Hmm. A bit "revisionist" for my tastes and doesn't go far enough.
How about:
"The images of neighbourhoods across Europe reduced to rubble due to countries making war on their neighbours are a lasting reminder of the destruction that can be caused by bellicose politicians and the racist/jingoist idiots that attend their rallies"".
Let's put the blame squarely where it belongs. No annexation of the Sudetenland, invasion of Poland, Blitzkrieg in France, no rubble, no explosions and the ionosphere remains placid.