Who turns a negotiating table upside down? #UN #NYT #CNN

Japan's Territorial Issue "Takeshima": No one casts any doubts over Japan's territorial claim over Takeshima islets. However, it is reported that South Korea often turns a table upside down whenever Japan brings up Takeshima issue.
Supopse you are working as a diplomat. How will you react if your counterpart all of a sudden stands up and turns a negotiating table upside down?