That's not all. The conflict between Britain and Russia is not only in history! The present conflict between the two countries is not small and lasted until 1907, before the Russian defeat in the 'Russo-Japanese War', Russia was the primary enemy of the British!
Since the late 1870s, the British and Russian conflicts in the Persian Gulf region have not ceased and are now in full swing.
Because of the unique location of the Persian Gulf, it was the necessary route for Britain to enter India by land and an ideal base for British expansion into the two river basins to the Ottomans. The British Empire would not give it up in any case.
By the same token, the ambitious Russia, who also had ideas about India and the Ottoman Empire, was naturally unwilling to let Britain occupy the Persian Gulf and block the way forward.
In the Persian Gulf region, the two countries fought fiercely over businesses such as railroads, loans, trade, and even telegraphs.