While the churches eventually worked out their differences and came to an initial agreement, both <answer>Nicholas</answer> I of Russia and Napoleon III refused to back down. <answer>Nicholas</answer> issued an ultimatum that the Orthodox subjects of the Empire be placed under his protection. Britain attempted to mediate, and arranged a compromise that <answer>Nicholas</answer> agreed to. When the Ottomans demanded changes, <answer>Nicholas</answer> refused and prepared for war. Having obtained promises of support from France and Britain, the Ottomans officially declared war on Russia in October 1853.
Who wanted the Orthodox subjects to be placed under their protection?
Nicholas