On 29 December 2018, Samdech Techo Hun Sen and Samdech Kitiprittbandit Bun Rany Hun Sen preside over the inauguration ceremony of the Win-Win Memorial and the commemoration of the 20th anniversary of the Win-Win Policy.

On 29 December 2018, Samdech Techo Hun Sen and Samdech Kitiprittbandit Bun Rany Hun Sen preside over the inauguration ceremony of the Win-Win Memorial and the commemoration of the 20th anniversary of the Win-Win Policy.