German Threat Was the End to Splendid Isolation

The Growing German threat was the most important reason for Britain ending its policy of Splendid Isolation. How far do you agree?
At first examination it would seem that it was not actually the fear of Germany that prompted Britain to end their policy of splendid isolation if we take into consideration that this of fear of Germany only really came to fruition in about 1905. However it was before this that Britain had broken its so named policy of ‘Splendid Isolation’ by signing an alliance with japan in 1902 and then going on to form an entente with the French in 1904.
Certainly there are indeed other reasons other than the emerging German threat that might have forced their hand, such as the emergence of alliance’s all around the globe which had begun to upset the balance of power (Franco Russian) this may have left Britain feeling pushed into a corner somewhat so that they felt that they had no other choice but to join an alliance so it was not left behind as its own level of relative power decreased.
Furthermore with the decrease of Britain’s level of relative power (it was easily being led by the US) but most notably Germany, the fact that a state as new as Germany could grow at such a rate made the British sit up and take note. And when in 1905 during the first Moroccan crisis it was the German’s who attempted to test the new bonds between the French and the British it demonstrated not only to Britain but to the world that the German’s wanted to carve out their own chunk of glory and they were not about to let anyone stand in their way. It was indeed between the years 1906-14 when the Anglo-German naval race was to take place. It was during this time that Germany drastically increased size of its navy, however this navy was only ever meant for short term purposes. Looking at it now it is obvious why the level of British Paranoia may be reaching breaking point at this time as a fleet of short range boats began to mass on her border, it demonstrated once