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."
Primarily Germany's naval challenge to Britain from 1900, leading to the Triple Entente of Britain, France & Russia.
They feared Germany had the technology to build nuclear bombs
Encirclement
infiltration
Encirclement Campaign against Northeastern Jiangxi Soviet happened in 1931.
Fifth Encirclement Campaign against Jiangxi Soviet happened in 1934.
germany gained a feared status among world powers
First Encirclement Campaign against Honghu Soviet happened in 1930-12.
Third Encirclement Campaign against Honghu Soviet happened in 1931-09.
First Encirclement Campaign against Jiangxi Soviet happened in 1930-11.
War on Two Fronts