Landis, Geoffrey. "The Resonance of Light"
Divergence: c 1914 CE
What if: Nikola Tesla invented the laser in the early 1910s.
Summary: On being asked to save his homeland of Serbia from the coming war, Tesla analyzes the probable chain of events and determines that the death of a world leader will avert the conflict.
Published: In ReVisions (eds. Julie E. Czernada and Isaac Szpindel), q.v.