Circassia is a country located in the Caucasus region, and unlike most Orthodox countries it is a Tribal Federation instead of a regular monarchy.
It starts out surrounded by the Great Horde, Crimea, Imereti and Avaria. It is the primary tag of the Circassian culture.
The below is one of many player suggested strategies for Circassia. Bear in mind, due to the dynamic nature of the game, it may unfold differently for other players.
Circassia starts with - 2 diplomatic relations penalty due to its government form so its starting position is crucial for Circassia. Your short-term goal should be to reform your government as fast as possible.
Due to weak your starting position and being Orthodox in the middle of Muslim land, your alliance choice is often limited to Byzantium, Trebizond, Georgia or Imereti. It's advised to avoid alliance with both Byzantium and Trebizond as they often fall to the Ottomans early on and you don't have the power to defeat them yet.
Your ultimate alliance is either Muscovy, Poland or Lithuania. Your starting point is usually won't allow you to do this but keep one slot open for them. Instead, fabricate on Imereti as soon as possible and declare on them. You can win alone but you could also promise land to Georgia to help you out. After defeating Imereti, take one province and vassalize them, betray Georgia to free your slot. Sooner or later, Ottoman will declare on you and Georgia often betrayed you anyway.
After that, you usually can have alliance with your ultimate alliance and focus on high developed province. Declare on Crimea if they are not vassalized by Ottoman yet, if they are then declare on Great Horde. Keep your relation high with Genoa as they are the source of your institution spread. Try to have a border with your ultimate alliance. Keep your relation high with Muscovy as they will have permanent claim on all of your pontic steppe area.
If you already have enough favor from your alliance, try to attack Ottoman ASAP You don't want to get sandwiched late in game between your ally, Ottoman and Persia. And Ottoman is the biggest threat as they usually desire Adyghe