Supporters of apartheid might feel uneasy about de Klerk's promises. They might see his promises as a threat to their way of life and their political power. Some might feel that de Klerk is betraying the values of apartheid and that his promises are a sign of weakness. Others might feel that de Klerk is trying to appease the international community and that he is not committed to the cause of white supremacy. Overall, supporters of apartheid would likely feel a mix of anger, confusion, and fear about de Klerk's promises.