Following the end of the Great War the lines between Christian Europe and the Islamic near east were drawn at the borders of old Ionia. Directly east of these lands was the Republic of Turkey, smaller than in Bruno's past life, and likely never to rise and become a great power again.
Meanwhile, further east was a Pan Arabic Empire that had formed from the collapse of the Ottomans, ruled beneath the authority of the Sharif of Mecca, and more or less following a federal semi-constitutional monarchy style modelled after that of both Germany and Russia in this timeline.
Beyond this fledgling Empire was the Shah of Iran, and further east was the British Raj, which while revolution had brew during the Great War as ultimately put down through brutal force by the British Empire after it withdrew from the war just early enough to begin dousing the flames across its own colonies in time to save them.