In addition to treaties, there are other less formal international agreements. These include efforts such as the Proliferation Security Initiative (PSI) and the G7 Global Partnership Against the Proliferation of Weapons of Mass Destruction. Although the PSI has a „declaration of prohibition principles” and the G7 Global Partnership includes several statements by G7 heads of state and government, it also does not have a legally binding document that sets specific obligations and is signed or ratified by member states. IpPC is a contract to prevent the introduction and spread of pests to plants and plant products and currently has 177 government recipients. IPPC has developed plant health guidelines and serves as a reporting centre and source of information. Seven regional plant protection organizations have been established under the aegis of ipPC. For example, the North American Plant Protection Organization (NAPPO) consists of the United States, Canada and Mexico, which participate through APHIS, the Canadian Food Inspection Agency (CFIA) and the Plant Health Directorate. The European and Mediterranean Organization for the Protection of Plants (EPPO) is an intergovernmental organisation that is also responsible, within the framework of the IPPC, for plant health cooperation between 50 countries in the European and Mediterranean region. After five years of war between Kushite Kandake, Amanirenas and Augustus of Rome, a peace treaty was concluded in 21/20 BC.    The mediators were sent to Augustus by Kush, who was in Samos at the time.  An agreement between the two parties has been beneficial for both parties. The Kushites were a regional power in their own right and were enthroa in recognition. The Romans also sought a quiet southern border for their supply of Egyptian grains absolutely indispensable, without permanent war obligations, and saluting a friendly buffer state in a border region harassed by raids by nomads.
The Kushites also seem to have felt nomads like the Blemmye as a problem.  The conditions were ripe for an agreement. During the negotiations, Augustus granted the Kushite envoys everything they asked for and also cancelled the tribute previously requested by Rome.  The premmis (Qasr Ibrim) and the areas north of Qasr Ibrim, in the southern part of the Thirty-Mile Strip, were ceded to the Kushites. The Dodecaschoinos were set up as a buffer zone and Roman troops were pulled back to the ancient Greek Ptolemaic border near Maharraqa.  The Roman emperor Augustus signed the contract with the Kozhites on Samos. The colony bought peace and calm in Rome on its Egyptian border, as well as the image of the Roman emperor Augustus, showed its abilities and ability to transmit peace without permanent war, and business with the distant Kouzhites, who shortly before had fought against his troops. The respect that the emperor granted by the kushit messengers, as the treaty also gave a positive impression to other foreign ambassadors to Samos, including envoys from India, and to the hand of Augustus in the upcoming negotiations with the mighty Parthers.  The colony sounded a period of peace between the two rich for about three centuries. The inscriptions erected by Queen Amanirenas on an ancient temple in Hamadab, south of Meroe, record the war and the favourable result from a Cushian point of view.  With his signing in the official contract, the Roman emperor Augustus marked the agreement by adorning his administrators to collaborate with regional priests for the construction of a temple in Dendur, and inscriptions show the emperor himself who celebrates the local pittes.  To the extent that a contract does not contain provisions for other agreements or measures, only the text of the treaty is legally binding.