FILE: Zareena, left, and Shakeela, internally displaced Afghan girls play outside a shanty at a refugee camp in the outskirts of Kabul, Afghanistan, Monday, July 25, 2011. Dar Yasin/AP hide caption toggle caption Dar Yasin/AP KABUL, Afghanistan — The United Nations expressed “grave concern” on Thursday about a new law issued by Afghanistan’s Taliban government on separation in marriage which includes provisions on child marriage, saying the code further entrenches discrimination against women and girls. The government rejected the accusations, saying the decree follows Islamic law and insisting the country has already banned the forced marriage of girls. Afghanistan’s justice ministry published Decree No. 18 “on judicial separation of spouses” last week, which sets out rules for separation of a married couple. Among its most controversial provisions, it says that the silence of a girl reaching puberty can be interpreted as consent to marriage. It also includes a section on the separation of girls who reach puberty and are married, which “implies that child marriage is permitted,” the United Nations Assistance Mission in Afghanistan (UNAMA) …