Egyptian troubles, a new Pope and a new Zar
The Oriental Crisis of 1836
The aftermath of the Russo-Turkish war and the Greek Independence War had left the Ottoman Empire much weakened. So much that Sultan Mahmud II could not afford to avoid giving in to the demands of his powerful Egyptian vassal Mehmet Alì Pasha, who, in return for his support during the war, asked to be given control of Syria and the Levantine coast.
After a couple of years though the situation in the Empire had somewhat stabilized, and the Sublime Porte felt to be again strong enough to take back direct control over those areas, claiming in 1835 that the cession had only been temporary. Mehmet Alì, confident in the strength of his western-trained army and hoping that diplomatic support from France and possibly Russia would see him prevail against his nominal master, refused to comply.
Mahmud II then sent his troops in Syria, hoping to put the unruly vassal back into his place, but the expedition soon met with disaster, as the Ottoman fleet sided with the Egyptians, and Mehmet Ali’s army inflicted several defeats to the Ottoman forces that had entered Syria, before pursuing them in Cilicia.
There, in 1836 the Egyptian army inflicted a decisive defeat on the Ottomans at the Battle of Adana. Anatolia was now devoid of significant Ottoman forces, and the way to Constantinople laid open, as the great part of the Ottoman Army was tied up in the Balkans, fearing Russian intervention.
These developments, carrying the real risk of seeing the Sultan deposed and the Ottoman Empire crumbling, deeply concerned the European Powers, always wary of any shift to the balance of power.
The United Kingdom and Austria sent naval squadrons in the Eastern Mediterranean, soon followed by France, while Russia started to mobilize once more along the Turkish frontier. Tensions were starting to rise, and the risk of the crisis evolving into a wider European conflict was real.
But in the end the tipping point for a new European conflagration was never reached: Constantin understood that French support of Mehmet's ambitions would not go so far as to fight on the side of Russia against the United Kingdom and Austria, with the probable support of Prussia, while nothing short of war would convince London to leave Constantinople and the Straits in Russian hands.
France managed to present herself to Egypt as an “honest broker”, and managed to convince Mehmet to put aside his imperial ambitions and accept the proposal of the European Powers.
In the end Mehmet Alì was recognized by Mahmud II as ruler of Egypt, Sudan, Crete, Syria (but not Aleppo) and Hejaz*, a title that would be hereditary and that entailed the recognition by the international community of his de-facto independence, with only nominal submission to the Sublime Porte (and obviously the payment of a significant tribute). His army and navy were however starkly limited by the peace treaty provisions, being reduced to a self defence force that could pose no threat to Ottoman rule in Anatolia.
The question of the Straits was settled by the Convention of Paris, stating freedom of navigation for commercial vessels (and exemption for Russia from transit duties and fees) and limited rights of passage for warships during peace (with limits of numbers and tonnage). In times of war, warships and fleets of belligerent countries could not pass.
The Conclave of 1839
On the 4th of October, 1839 His Holiness Pope Leo XIII left this world, and the contest for his succession opened.
Since his election, the Holy See had de facto lost control over the most prosperous parts of the Papal States, and had been unable to prevent the formation of the Lega Doganale Italiana, or at least to take up a leading role in it.
The Conclave was divided, as it had been the last time it convened, between moderates and reactionaries, with the two factions respectively represented by Cardinal Tommaso Bernetti and Cardinal Luigi Lambruschini.
Bernetti himself was far from a liberal, but he had a pragmatical mind and was considered ready to make some minor concession to liberalism if that meant a strengthening of the Papal States and an improvement to their economical situation. For example it was not a mistery that Bernetti supported an eventual entry of the Papal States into the Lega Doganale and it is possible that he found some interest into the neo-guelph idea of a confederation of the Italian principalities under the tutelage of the Roman Pontiff. Lambruschini instead was a true reactionary, adverse to liberalism and regarding all innovations with suspicion.
Bernetti, who had good relations with many cardinals, was confident of his eventual victory, but his dreams were cut short by the veto placed by the King of France on his name, because of unresolved disputes dating back to his time as an ambassador in Paris. The opening of the conclave thus saw the moderate-liberal cardinals bereft of their leadership, while the conservatives flocked to the banner of Lambruschini.
The conclave seemed set for electing the reactionary cardinal, when Bernetti pulled an unexpected ace from his sleeve, endorsing Cardinal Ludovico Micara, former General of the Capuchin Order and very popular because of his austere lifestyle (he still lived in his seminar cell), his charitable work during the cholera outbreaks of 1836 and his good government of his diocese of Frascati. He also commanded respect among conservatives because of his rigorous theological stances.
Initially his name was met with skepticism, as the election of a Capuchin to the Holy See was something unprecedented, but in the end a majority formed around him, sensing him as the only viable alternative to Lambruschini, who, with his inflexibility, might have caused the opposite effect of inflaming liberals into a new uprising. Thus the 64-years old Ludovico Micara was elected Roman Pontiff, adopting the name of Paulus VI.
His policies as a Pope encountered the favour of the Italian liberals, as he released many political prisoners, while pardoning several exiles. He also slightly relaxed preventive censorship and in 1845 abolished most restrictions on Roman Jews. But he opposed any significant political change, resisting pressures towards emanating even a moderate Constitution; his most significant achievements were instead in improving the lot of the common people of the “eternal city”, who soon came to idolize him and in fighting the corruption and byzantine complexity of the pontifical bureaucracy. Although aged, he was remarkably active, and many cardinals rued his election (they had thought of him as an harmless theologian) when he showed his centralizing ways in the administration of the Papal State.
He wasn't particularly interested in the Italian question, and he refused to entertain any idea of becoming the head of an Italian Confederation, but his pragmatical side saw the utility of closer commercial relations with the other Italian States, leading him to ratify a free trade agreement with the Lega Doganale, while endorsing the project of building a railway between Rome and the port of Civitavecchia. Further steps towards Italian unification, such as an outright entry into the Legs Doganale, were firmly rejected by the Pope, who saw them as the antechamber for the end of Papal temporal rule.
A new Emperor of all the Russias
Constantin I died in July 1841, at 62 years of age, and was succeeded by his younger brother Nikolai Pavlovich, who had until then been Namiestnik of Poland. Emperor Nicholas I had acquired the fame of a strict disciplinarian and political reactionary, but was also considered to be a capable administrator, having managed to keep control of the unruly provinces for many years, and having brilliantly stifled the rebellious ferments of 1830-1831 before they could develop into a full-blown insurrection.
Constantin had surrounded himself with mostly liberal ministers and advisers, but the actual reforms made during his reign were few and overall marginal, as the great question of the eventual abolition of serfdom was never concretely addressed. Constantin’s main concern had always been foreign policy, and especially the cultivation of expansionist designs over the territories of the Ottoman Empire, designs that in the end had only mixed success, because, as the Oriental Crisis of 1836 showed, the other Great Powers, and especially the United Kingdom, would do their outmost to keep the Ottoman Empire relatively stable and especially to avoid the Straits falling under Russian control.
Nicholas instead was expected to have both a stricter and more conservative, if not reactionary, internal policy, while acting more moderately in foreign policy, trying to find some rapprochement with the other Great Powers.
*The Holy Cities of Mecca and Medina remained under direct Ottoman control.
EDIT: in an earlier draft I had gone with Lambruschini elected in 1839, but then I changed my mind. Unfortunately I can no longer edit the previous post, where his election was mentioned. (Spoiler: In 1846 Micara will die, leading to the election of some reactionary because of backlash against his controversial policies.)