I´m a little confused with this policy. In Ryanair's terms and conditions it states;
Ryanair does not carry unaccompanied minors (under 16 years). Children under the age of 16 years must always be accompanied by a passenger over 16 years. Escort and special facilities are NOT available.
Then later states;
Croatian routes: Children aged 14-18 travelling to or from Croatia without their parents or legal guardian must carry with them: - A valid passport or government issued National Identity card along with a written permission, signed by the parent(s) or legal guardian. This written permission must be notarised by a Croatian embassy/consulate or local authorities. If not notarised at the embassy/consulate, an official legal translation into Croatian will be required.
Errrrm, probably missed something but why can Croatians fly at 14 unaccompanied but not others?