12-year-old girl dies while giving birth

Correct me if I am wrong but child marriages as you call them are not covered by The United Nations Convention On The Rights Of The Child but generally by Convention on the Elimination of All Forms of Discrimination against Women (1979). Article 16 of the convention does not specify an age limit for marriage. It requests the individual states to set a limit themselves. Therefore in this case my understanding is that it was not a child marriage as such or against UN convention. Even if such was not the case, the UN would only bind Yemen to enact the law (providing that Yemen ratified the Convention, it would be free to decide the age limit itself for marriage), until such laws are not enacted the actions of people are totally legal. Therefore I am inclined to say that their cultural ways should be respected until laws are enacted that make marriage at the age of 12, 13, 14 , 15, or 16 illegal.