Editing Treaty of 2552

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The '''Treaty of 2552''',{{Ref/Reuse|sa1}} also known as the '''Ceasefire of 2552''',<ref>''Halo: Spartan Assault'', [[Operation A: Umbra]]</ref> is an agreement of peace between the [[Unified Earth Government]] and the [[Fleet of Retribution]]—or more generally, most of [[human]]ity and [[Sangheili]]—that brought an end to the [[Human-Covenant War]]. Although the war officially ended on [[2553#March|March 3, 2553]], the fighting between humanity and the [[Covenant]] ended on [[2552#December|December 11, 2552]].<ref name="halo">''[[Halo 3]]'', campaign level [[Halo (Halo 3 level)#Eulogy|Halo]]</ref> The treaty's title refers to the peace agreement and alliance developed between the Sangheili and the [[United Nations Space Command]] in 2552, although the Treaty of 2552 was formally ratified in [[2553#February|February 2553]] with the [[Swords of Sanghelios]].{{Ref/Reuse|gl60}} The era following the war is referred to as the '''Treaty period''' by some individuals.<ref>[https://www.halowaypoint.com/en-us/universe/characters/axl ''Halo Waypoint'': Axl]</ref>

The Treaty of 2552 declared the cessation of hostilities between [[human]]ity and the [[Sangheili]]. The peace treaty forbids any party of the agreement from landing on the remains of [[Installation 04]]<ref name="nf1">''Halo: Nightfall'', Chapter One</ref> and a 500 light-second exclusion zone was established around [[Threshold]], with both Sangheili and human warships patrolling the region.<ref name="universe">[https://www.halowaypoint.com/en-us/universe/locations/threshold ''Halo Waypoint'': Universe - Threshold]</ref> However, Sangheili and UNSC forces continue to monitor [[Installation 07]] and worked together to prevent potential [[Flood]] outbreaks,<ref>[https://forums.halowaypoint.com/yaf_postsm3003659_Catalog-Interaction.aspx#post3003659 ''Halo Waypoint'': Catalog Interaction - Page 48]</ref> while the UNSC has established research facilities orbiting [[Installation 03|Installations 03]] and [[Installation 05|05]].<ref name="11hour">''[[Eleventh Hour reports]]'', Report #5</ref> Regions of space held cooperatively between the [[Unified Earth Government]] and the [[Swords of Sanghelios]], called [[Joint Occupation Zone]]s, were established,<ref>[https://forums.halowaypoint.com/yaf_postsm2969315_Catalog-Interaction.aspx#post2969315 ''Halo Waypoint'': Catalog Interaction - Page 14]</ref> as were research and military pacts formed between the two governments.<ref>[https://forums.halowaypoint.com/yaf_postsm2969311_Catalog-Interaction.aspx#post2969311 ''Halo Waypoint'': Catalog Interaction (post 2969311)]</ref> [[Terrorism|Terrorist]] groups and splinter cells continued to directly violate the treaty's terms by attacking the parties of the treaty.{{Ref/Reuse|sa1}}{{Ref/Reuse|nf1}}

The [[Human-Covenant War]] lasted just over twenty-eight years. The war, primarily occurring in the [[Orion Arm]] of the [[Milky Way]] galaxy, led to the destruction of a majority of the [[Unified Earth Government]]'s [[human colonies|colonies]], over 23 billion [[human]] causalities,<ref>''[[Halo: Evolutions]]'', "[[Palace Hotel]]", p. 351</ref> and the dissolution of the massive [[Covenant]] empire. In [[2552|the final year]] of the war, the remaining [[Hierarchs]] of the Covenant replaced the [[Sangheili]] with the [[Jiralhanae]] in an effort to gain an unquestioning [[Covenant military|military]].<ref>''Halo: Broken Circle'', p. 209</ref> This led to the [[Great Schism]] and the entire Sangheili species was ejected from the Covenant. The most organized group of Sangheili was led by [[Arbiter]] [[Thel 'Vadam]] and [[Special Operations Commander]] [[Rtas 'Vadum]]. Recognizing that the Sangheili were too disorganized to properly seek revenge against the Covenant, 'Vadam and 'Vadum reluctantly agreed to work together with members of the UEG's [[United Nations Space Command]] to defeat the Covenant.<ref name="journey">''[[Halo 2]]'', campaign level, [[The Great Journey]]</ref> Initially, however, there was no truce between humanity and the Sangheili species at large; at the onset of the Great Schism, the Sangheili on High Charity continued to engage both Covenant and UNSC forces in the midst of the confusion, additionally [[Xytan 'Jar Wattinree|Xytan 'Jar Wattinree's]] [[Joyous Exultation alliance|forces]] at [[Joyous Exultation]] remained hostile to both Covenant and UNSC as well.<ref>''[[Halo: Ghosts of Onyx]]'', p. 239-245</ref> Ultimately, the UNSC and the Sangheili [[Fleet of Retribution]] were able to work together to dissolve the Covenant at [[Installation 00]] and stop a potential galactic [[Flood]] outbreak.{{Ref/Reuse|halo}}<ref>''Halo 3'', campaign level ''[[The Covenant (level)|The Covenant]]''</ref> With the war over, relative peace was finally seen by humanity for the first time in years. [[Terrence Hood|Fleet Admiral Lord Terrence Hood]] was invited to [[Sanghelios]] by the Arbiter to formalize the peace treaty between the UEG and the newly established [[Swords of Sanghelios]], ratifying the Treaty of 2552.{{Ref/Reuse|gl60}} The official treaty was signed and ratified by Hood and 'Vadam. On [[2553#March|March 3, 2553]], 'Vadam and 'Vadum were invited to [[Earth]] for the [[Voi Memorial]], a tribute to the soldiers that lost their lives in the war.{{Ref/Reuse|halo}}<ref>''Halo: Glasslands'', p. 358-361</ref>