Fredric Brown's "Mouse" (short story, alien invasion, free)

A few days after the little alien ship with a dead mouse as the sole passenger landed in the middle of a city, widespread destruction began happening world over - assassinations of heads of governments, bombings of population centers, ...

Bill Wheeler has an idea that landing of the ship is somehow linked to increasing chaos. In fact, he seems to have an idea of how exactly...

See also.

1. Key plot element of the story is similar to John W Campbell, Jr's "Who Goes There?" But Campbell's version is both longer & more of a thriller (or horror, depending on tastes).
   

Fact sheet.

First published: Thrilling Wonder Stories, June 1949.
Rating: A.
Download full text from Internet Archive.
Included in Ellen Datlow's Sci Fiction Classics.
Related: Stories of Fredric Brown.