Japan no longer considers South Korea as a trusted trading partner.
The Japanese cabinet announced on Friday that it is striking its neighbours from a “white list” of countries that have fast-track export status.
Seoul has responded strongly to the decision, with a government spokesperson saying: "Our government will sternly respond to Japan's unfair decision."
The latest development has further soured relations between the two countries.
Japan and South Korea are already at odds over compensation for wartime forced laborers.

Some UK departing flights disrupted by NATS technical issue
At least 73 injured after Houthi rebels attack Saudi civilian and energy facilities
UK, France and Canada sanction Israeli West Bank settlements
Suspect detained after sabotage attacks on Germany power grid
Nepal rescue focused on workers trapped in three tunnels
Indonesia reopens Jakarta airport, four others after Anak Krakatau ash clears
Russia hits Kyiv after brief pause for US envoys' visit, killing two
Kenya offers temporary amnesty to undocumented East Africans amid crackdown fears
