A Country Pack for a region that until now was almost empty territory on the map: Iran, Iraq and Afghanistan get playable content of their own with some real depth for the first time, while India leaves behind Together for Victory's shared dominion tree for one of its own.
What New Content It Adds
Like any Country Pack, there are no new system mechanics here — all the content is nation-specific, concentrated in a single region of the map.
Nations: India, Iran, Iraq, and Afghanistan
India, 
Iran, Iraq and 
Afghanistan get their own focus trees with a strong resistance thread against colonial rule or great-power influence — the fight for independence and regional sovereignty runs through the whole pack. It's pure country content, built to give real options for decolonization paths or resistance against empires in a part of the map that barely had focuses in the base game. India specifically only had Together for Victory's shared dominion tree despite being one of the most populated regions on the map; now it has its own tree with much more identity, even if it still leans on the 
UK for some background mechanics.
Who's It For?
Only worth it if you're specifically drawn to playing one of these four nations. If your plan is to stick to the major European or Pacific powers, you won't notice its absence — it's one of the more niche DLCs in the catalog.