Definitions of intervention
a procedure used in a legal action by which the court allows a person who was not originally a party to the case to come into the case
Amnesty International presented a third party intervention in the case Abu Zubaydah v. Poland before the European Court of Human Rights.
to deliberately get involved in a problematic situation or issue in order to improve it or stop it from getting worse
A County Antrim solicitor has had £200,000 in assets frozen after an intervention by the Law Society.