According to Turkish Inheritance Law, if one of the spouse dies , whether there are no children the assests will be shared 50% by the alive spouse and the deceased spouses family. (His mother and father, if they are died by his brothers and sisters.) However if there is a child that means that the assest will be divided between the alive spouse (25%)and the children(75%) It does not matter if the children are Turkisn citizens or not. Besides this, if your husband's properties are in Turkey he has to make a will here to leave the properties to you( keeping your children's reserved propertion right) .