Twenty years ago the United Nations adopted the Convention of the Rights of the Child. The CRC or UNCRC, sets out the civil, political, economic, social and cultural rights of children.

Nations that ratify the UNCRC are bound to it by international law.

Argentina's northeast province of Misiones is seeing a growing trade in newborn babies

The treaty restricts the involvement of children in military conflicts and prohibits the sale of children, child prostitution and child pornography.

However, the treaty's promise to protect children has not always been kept.

In many cases, poverty is to blame for making worse the plight of the most vulnerable.

Al Jazeera's Teresa Bo reports from Argentina's impoverished northeast province of Misiones, which is seeing a growing trade in newborn babies.