I worked in a bank “note department” in my first job in a bank. I was tasked with documenting and making sure each “note” aka “mortgage” has proper insurance. I was 15 years old. In looking at reams of paperwork I remember seeing “NUCLEAR EXCLUSION CLAUSE” and as a kid in the 1980s that certainly got my attention. Basically, if you get nuked, don’t expect to collect.
The nuclear exclusion clause is a clause which excludes damage caused by nuclear and radiation accidents from regular insurance policies of, for example, home owners.
Example: Notwithstanding anything to the contrary herein, it is hereby understood and agreed that this policy shall not apply to any loss, damage or expense due to or arising out of, directly or indirectly, nuclear reaction, radiation or radioactive contamination regardless of how it was caused.
Source: Wikipedia