Amazon's stock has gained 52% in the past 12 months, partly driven by enthusiasm for the company's investments in artificial intelligence.

(Image credit: Jenny Kane)

The Moscow-based company said in a statement that the U.S. Commerce Department’s decision would not affect its ability to sell and promote its cyber security products and training in the U.S.

(Image credit: Pavel Golovkin/AP)

The Seoul summit is a follow-up to last November's summit in the U.K., where participating countries agreed to work together to contain risks posed by galloping advances in artificial intelligence.