The Protocol against the Smuggling of Migrants by Land, Sea and Air, adopted by General Assembly resolution 55/25, entered into force on 28 January 2004. It deals with the growing problem of organized criminal groups who smuggle migrants, often at high risk to the migrants and at great profit for the offenders. A major achievement of the Protocol was that, for the first time in a global international instrument, a definition of smuggling of migrants was developed and agreed upon. The Protocol aims at preventing and combating the smuggling of migrants, as well as promoting cooperation among States parties, while protecting the rights of smuggled migrants and preventing the worst forms of their exploitation which often characterize the smuggling process.