isolationism
nounUK /ˌaɪsəˈleɪʃənɪzəm/
US /ˌaɪsəˈleɪʃənɪzəm/
Isolationism is when a country decides to stay out of other countries' business and not get involved with them.
The country's isolationism kept it from joining the war for many years.
OTHER MEANINGS
2. A personal habit of keeping apart from other people or groups.
His isolationism made it hard for him to make friends at work.
3. A policy of avoiding alliances and international agreements.
The party's isolationism led it to oppose the new trade treaty.
4. The tendency of a group to focus only on its own concerns.
The club's isolationism meant it ignored what was happening in the wider community.