Arabia
The month of July sees sporadic fighting between Saudi and Hedjazi irregular cavalry in various locations, while Indian troops grind their way closer to Riyadh. The Indian advance is slow and deliberate, as the length and difficult nature of the supply route to the front will not support a fast-moving, sustained offensive. Indian leadership accepts this and uses the opportunity to refine its operations while attriting Saudi regulars.
Six days after the last significant Saudi/Hedjazi skirmish, the Saudi government agrees to a ceasefire with the following key points:
1) Immediate exchange of military and civilian prisoners, supervised by the Red Crescent
2) Withdrawal of Indian forces from Saudi Arabia
3) Saudi recognition of Hedjaz as an independent nation
4) A guarantee of access to Medina and Mekkah by Saudi citizens for the purpose of pilgrimage
5) Saudi recognition of Asir as a League of Nations mandate, with India as the mandatee
This Treaty of Ankara is signed by Minister Kadharni (Bharat), Prince Yusuf ibn Ali (Saudi Arabia) and Prince Hussein ibn Ali (Hedjaz) on 27 July 1933, concluding the eighteen month war in Arabia. This is followed by a terse recognition of Hedjazi soveriengnty by Saudi Arabia the next day, along with a more flowerly recognition by India. Persia chips in its recognition two days later.
Hedjaz now consists of the western provinces of Arabia, from north to south: Al Jawf, Tabuk, Al Madinah, Makkah, and Al Bahah [OOC: which, in this case, includes the chunks of historical Asir and Jizan that aren't included in the WW Asir mandate]. Its economy, based on natural resource exploitation such as fishing, agriculture, and limited mining, will be about equal to that of the surviving state of Saudi Arabia once things settle down and damage is repaired.*
Politically, the first few weeks of Hedjaz are somewhat chaotic. Prince Faisal and his nephew Hussein had anticipated - given the tumultuous greeting Faisal received on his return to Jiddah in March - that Hedjaz would revert to a kingdom under the rule of their family, as it had been prior to the Saudi annexation in the early twenties. It turns out that the cheering Faisal heard was directed more at his message than to himself; his family's earlier defeat at Abdul Aziz ibn Saud's hands, and their subsequent flight to Asir, did not inspire a great deal of confidence amongst Hedjaz's population.
There are no clear-cut replacements for Faisal or Hussein as a king/prince/autocrat, either. The governor of the largest province, Makkah, might have been a reasonable choice, but he is a staunch Saudi supporter and has already fled east. At the opposite end of the spectrum, democracy is not strongly favored, being an unfamiliar form of governance with no recent usage in the region. A grand council of tribal elders spontaneously convenes itself in Makkah to discuss matters , and finally a confederate system is made possible with the decision to split Makkah in two, one province retaining the name, the other being named for Jiddah.
In the new confederate system, a House of Amirs is created, with twenty-four seats. Six seats are assigned to each of Jiddah and Makkah, four each to Madinah and Al Bahah, and two each to Al Jawf and Tabuk, on a rough basis of population. Every five years, the governor of each province appoints his Amirs from a list of candidates put forward by tribal elders within that province.
-The twenty-four Amirs then elect a Speaker, who oversees conduct and operation of the House.
-The twenty-three remaining Amirs then elect an Amir al-Umara, the government leader, from amongst themselves.
-The twenty-two remaining Amirs then elect eight ministers from amongst themselves, but the Amir al-Umara determines which minister receives which portfolio. The portfolios are: International Relations, Defence, Agriculture, Fisheries, Industry, Infrastructure, Education, and Religion. The Rules of Government also allow for additional portfolios to be created if the House of Amirs considers it necessary.
-There are thus nine amirs in the "government" and fourteen in the "opposition" who vote on matters, the Speaker only voting in the rare case of a tie.
On the military front, India begins demobilizing forces from the region on 14 August, beginning with those forces contributed by the Philippines, Japan, and Persia. Over the following days, the Samraja expresses gratitude to these nations for their assistance in the conflict. For India's part, a military presence will be retained in Asir and Hedjaz, with the likelihood that India will help train and equip a Hedjazi military in due course.
*In other words, I'll assume that the one factory in pre-war Saudi Arabia is now split into two "half-factories", one for each of Hedjaz and the rump Saudi state.