Business Finance Homework Help

I’m working on a business law question and need an explanation and answer to help me learn.

Killem Chemicals is a U.S.-based manufacturer of agricultural chemicals. Killem recently sold two thousand gallons of Insta-Death, its most toxic weedicide, to South Asian Exports (SAE), a trading company acting as a middleman headquartered in Singapore. SAE refused to disclose the use that it intended to make of the product and paid cash upon its delivery. SAE ultimately shipped the Insta-Death to the Syrian government for use in its chemical weapons program. Is Killem liable for the ultimate transshipment of Insta-Death to Syria? What principle of law is applicable to this case? Please explain the application of this principle to this case.