A: Islamic countries and their presidents should cooperate on righteousness and piety, and whoever wants goodness and repents for past oppression, you should cooperate with him in righteousness and piety. Allah (Exalted be He) says, but whoever forgives and makes reconciliation, his reward is with Allâh. It is desirable to meet the bad with good and pardon people so long as the wrongdoer does not persist in his bad behavior or adheres to the truth and does not transgress. It is not a shame that a person returns to the truth; feuds and hostilities should not lead to damaging the public interests of Muslims. In fact, this results in unappreciated ends. Instead, Muslims should try their best to eliminate them through pardoning, forgiveness and reconciliation. The person who behaves badly should declare his repentance and offer excuses for his action, starting by replacing his misdeeds with good deeds since good deeds wipe out bad ones on the condition the doer is sincere. However, if a transgressor continues in his transgression and refuses reconciliation and cooperation, it is obligatory not to cooperate with him so long as such cooperation causes harm to the Islamic Da`wah or the Muslim society or leads to the corruption of morals.