Posian War

Cause:
Conflict buildup from ongoing problems between the PSSR and Tempia and with the PSSR sending surveillance aircraft and the first highly advanced UAVS on overflights of Tempian territory to intimidate the latter. A UAV carrying a large payload on a predicted attack vector towards the Tempian capital caused Tempian air defences to engage, initiating hostilities.

The First PSSR Strike on Tempia:
For the purpose of armed reconnaisance the PSSR sent an arsenal bird carrying a payload of 100 DR-90 drones along the Tempian east coast. Despite demands from Tempian interceptors for it to withdraw, the arsenal bird continued on its course before turning westward over the Tempian state of Orkette and towards the Tempian capital, Shirack, in the state of the same name. Fearing a first strike against their capital, Tempian air defences engaged and destroyed the arsenal bird and its drone payload over the Xeren Strait with a nuclear tipped surface to air missile. A further two arsenal birds loitering off Tempia's northern coast then began assaults of their own, causing damage to Tempian air bases and air defence installations before they too were destroyed by nuclear missiles and their drone payloads shot down by Tempian fighter jets.

The Destruction of Project Epsilon and Tempian Capture:
Following the loss of three arsenal birds in rapid succession, the PSSR decided to use Project Epsilon, a Stonehenge type weapon situated on an island north of Tempia, to threaten Tempia into submission. However its power up process was detected prematurely by Tempian forces who launched a preemptive nuclear strike against it delivered by a hyper sonic glide vehicle from orbit. The resulting ground burst explosion turned most of the Project Epsilon base into a radioactive crater which rapidly filled with sea water. PSSR command considered using nuclear weapons to attack the Tempian mainland in retaliation but backed down under the threat of Tempian nuclear strikes against their own homeland.

The PSSR intended to immediately rebuild Project Epsilon and sent construction teams to the devastated island only to find Tempian forces had already landed there. Despite their best efforts, the Tempian forces were heavily dug in and could not be removed, leaving most of the island in Tempian hands and an uneasy ceasefire in effect.

The Ceasefire Collapses:
Having not yet given up its quest to subjugate Tempia, the PSSR continued to construct Stonehenge weapons in the Posian Ocean with which to threaten Tempia. By happenstance, a ship carrying parts for such a weapon got lost and arrived in Shirack to refuel. Tempian port authorities discovered the Stonehenge components on board and promptly confiscated them, angering the PSSR. Several options were considered to retrieve the captured cargo but none were deemed to have any chance of success so with the help of the UCU, an outright invasion of Tempia was decided upon and war formally declared.

The Second PSSR Strike on Tempia:
Despite Tempian cruise missile attacks on nearby bases and the destruction of many satellite systems, the PSSR pressed on with its invasion plans and landed troops in northern Shidam State by airdrop and amphibious assaults, securing a beachhead in the region of Fyuukame Plain. The Tempian military responded en-masse, flooding the area with troops. While the PSSR managed to briefly achieve local naval and aerial supremacy in spite of heavy losses, PSSR ground forces were unable to break out of their beachhead. With the Tempian navy choosing to raid supply convoys instead of face the PSSR navy head on and more Tempian reinforcements flooding into the region by the day, a haphazard withdrawal was attempted after four days of fighting which saw thousands of PSSR soldiers captured on the beaches as the PSSR fleet now lacked the ships to evacuate them all. Fighting ended in a decisive Tempian victory against the invaders.

Tempia Strikes Back:
With the PSSR navy damaged and on the retreat and most of the PSSR's amphibious assault forces captured or destroyed, Tempia pressed its advantage and launched invasions of PSSR controlled islands to the north with the objective of securing the ports, airbases and Stonehenge installations there to prevent their use against the Tempian mainland. Little resistance was encountered and one by one, the islands fell in quick succession.

Conclusion:
Having been forced out of the Posian Ocean near Tempia, the PSSR agreed to another ceasefire. This would hold until a PSSR ally, Estovakia, reignited hostilities by attempting to invade Tempia and calling on the PSSR for help, initiating the Second Posian War.