The 1980 Hague Convention is an agreement between certain countries which aims to ensure the return of an abducted child to the country where he or she normally lives.
All cases that come under the Hague Convention are dealt with by the Central Authorities in the UK.
To find out which countries are part of this Convention, visit the Hague Conference Website.
If a child has been taken to a country that has not signed the Hague Convention parents may need to apply for custody and permission to bring their child back to the UK through the courts of that country.
More top news
RAF Tornados will continue to carry out air strikes against so-called Islamic State into 2017, the Defence Secretary has announced.
A mother has paid an emotional tribute to the people who helped her find her missing three-year-old son after he went missing in Liverpool.
A low pressure system in the near Atlantic will bring a text book swirl of cloud - with blustery downpours as winds whip up tonight.