Germany’s highest court strengthened gay couples’ adoption rights in a ruling Tuesday that the country’s justice minister greeted as “a historic step.” The Federal Constitutional Court ruled that one member of a civil partnership should be able to adopt the partner’s stepchild or adopted child. Until now, they could only adopt a partner’s biological child. Germany has allowed same-sex couples to register civil partnerships that legally fall short of formal marriage since 2001. Unlike many other European countries, including Spain, the Netherlands and, most recently, France and Britain, it hasn’t moved toward allowing full gay marriage. The court ruled on a challenge to the existing rules from a woman who was denied permission to adopt a Bulgarian girl whom her partner had adopted. It ordered the government to draw up new legislation by June 2014.