Praise be to Allah.
We put this question to Shaykh ‘Abd-Allaah ibn Jibreen, may Allaah preserve him, who answered as follows:
One should find out to whom the aid is being given. If the majority of people being helped are Muslims, then it is permissible to give money so as to lessen the crisis. But if the majority are idol-worshippers or communists, then one should not give money. And Allaah knows best.