e.g. Saudi Arabia executes child criminals by waiting until they are 18.
e.g. Iran's laws take precedence over the UN treaty.
Currently 193 countries have ratified, accepted,
or acceded to the UN Convention on Child Rights, including every member of the United Nations.....except Somalia, and the United States.
Both Somalia and the United States have signed the document but have not ratified it. Somalia had announced in late 2009 that it would eventually do so but the US Congress refuses to ratify the CRC.
Only in a "civilized" country like the US do sick perverts like child abusers, kidnappers, molesters, rapists, and murderers serve light prison sentences, if any at all, and then freed to prey on more children.....