isolationism
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'Isolationism'
I believe the term you are looking for is isolation. America had an "isolation policy", which meant that they would stay out of European affairs, for a long period up until their entry into World War One.
In terms of monasticism, in the world means "existing on this Earth" while of the world means participating actively in secular human affairs.
The Continuous Front was considered a great revolution in military affairs.
As to not make anyone mad and to get things from everyone.