Wales manager Ryan Giggs has called upon officials to be prepared to take teams from the field if they face racist abuse during their upcoming 2020 European Championship qualifiers.
The Dragons travel to Osijek on Saturday to face Croatia in the first of two matches this month, with him side also facing Hungary.
It will be the first visit of a British side to the Balkans since England travelled to Montenegro in March, where players were the targets of discriminatory chanting from home supporters.
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Both Croatia and Montenegro, along with Serbia, have struggled with problems of racism in recent years, with various controversies dogging their international encounters.