In 1863, the daimyo of Choshu (in western Honshu) fired on foreign ships in the Shimonoseki Straits.
The foreign ships did not enjoy being fired upon.
mnli hypothesis: The foreign ships did not enjoy being fired upon. premise: In 1863, the daimyo of Choshu (in western Honshu) fired on foreign ships in the Shimonoseki Straits.