Why German naval power changed Britain's diplomatic alignment

Britain's prewar alignments followed changing threat calculations rather than permanent friendships. Russia remained a competitor over Afghanistan, India, and the Far East, while France became useful as a counterweight to Germany; Britain had traditionally worked with Prussia against French and Russian pressure. Germany's decision to combine Europe's most capable army with a fleet able to challenge British sea power made it a direct danger to an empire dependent on maritime strength. German assurances could not erase the strategic signal sent by fleet construction, which is why the naval race reshaped British diplomacy.