the function of western governments is to a large extent to facilitate and protect it's nations trade. governments collect duties taxes and tarifs on trade.
when a nations trade is reduced, that nations government funding is affected. vis a vis in capatalistic society, the nations corporate enitys are powerful lobbys. if the french cheese and wine industries are pinched, they will put pressure on the government to change the policys that provoked the boycott.
i strongly support boycotts.
and if that don't work, bomb the sonsasqueakes.