SEOUL, South Korea (AP) — The influential sister of North Korean leader Kim Jong Un again denied Friday that her country has exported any weapons to Russia, as she labeled outside speculation on North Korea-Russian arms dealings as “the most absurd paradox.”

The U.S., South Korea and others have steadfastly accused North Korea of supplying artillery, missiles and other conventional weapons to Russia for its war in Ukraine in return for advanced military technologies and economic aid. Both North Korea and Russia have repeatedly dismissed that.

Foreign experts believe North Korea’s recent series of artillery and short-range missile tests were meant to examine or advertise the weapons it was planning to sell to Russia.

Kim Yo Jong called outside assessments on the North Korean-Russian dealings “the most absurd paradox which is not worth making any evaluation or interpretation.”