Primarily Germany's naval challenge to Britain from 1900, leading to the Triple Entente of Britain, France & Russia.
The noun form of "encircle" is "encirclement." It refers to the act of surrounding or forming a circle around something or someone. In a sentence, you could say, "The encirclement of the village by the enemy forces was a strategic move in the battle."
They feared Germany had the technology to build nuclear bombs
germany gained a feared status among world powers
War on Two Fronts
Encirclement
infiltration
Fifth Encirclement Campaign against Jiangxi Soviet happened in 1934.
Encirclement Campaign against Northeastern Jiangxi Soviet happened in 1931.
In Hitler's speech on June 11 1941, he said the Soviet Union was provoking Germany because it was run by Bolsheviks and Jews and part of the British 'encirclement' of Germany.
First Encirclement Campaign against Jiangxi Soviet happened in 1930-11.
First Encirclement Campaign against Honghu Soviet happened in 1930-12.