Adhesion

The entrance of another state into an existing treaty with respect only to a part of the principles laid down or the stipulations agreed to. Opp. Int. L. § 533. Though, properly speaking, by adhesion the third state becomes a party only to such parts as are specifically agreed to, and by accession it accepts and is bound by the whole treaty, the distinction between the two terms is not always observed, as appears even in the Hague "Convention with Respect to the Laws and Customs of War on Land" 1899, which in art. iv authorizes non-signatory powers "to adhere" and provides how they shall make known their "adhesion"; while, as is remarked by the writer above cited, "accession" is meant. See Accession.