Who started the 2019 trade and diplomatic dispute between South Korea and Japan and why?

https://www.quora.com/Who-started-the-2019-trade-and-diplomatic-dispute-between-South-Korea-and-Japan-and-why/answer/%E6%A1%91%E7%94%B0-%E5%81%A5%E5%8F%B8-Kuwata-Kenji?prompt_topic_bio=1

The three items that Japan has strengthened export control are materials that can be diverted to military use.

Japan has a duty to control whether these exporting countries are properly used in "international security".

However, Korea ignored Japan's inquiries for three years.

Under such circumstances, Japan announced that it confirmed Korea's "inappropriate case".

The Japanese government does not talk specifically about "inappropriate cases".

There are rumors that " bartered them for crude oil in Iran," "smuggling to North Korea," and "smuggling to factories in China."

The Korean government announced that "There were 156 cases of smuggling," "SMEs exported without knowing that they were military conversion goods," "Smuggling was not Japanese goods," "We imported nearly 4 tons, but most were defective so returned them."

In any case, Japan does not trust Korea.

So, Japan will exclude Korea from "White country".

If you are against this measure, please tell me why you should make "a country that cannot be trusted" a "white country", and why Korea doesn't appeal "make Korea a white country" to the U.S.A. and the EU.