What does "interventionism" mean?

The political practice of intervening in a sovereign state's affairs.

What is a synonym for "interventionism"?

Common synonyms include: more governmental.

noun

noun ·6 syllables ·Rare ·Advanced level

Noun

1
The political practice of intervening in a sovereign state's affairs. countable, uncountable
2
The medical practice of trying to prolong someone's life. countable, uncountable
3
The idea that a person develops cognition through explicit instruction by others, and not merely by being nurtured and allowed to develop individually. countable, uncountable

From French interventionnisme. By surface analysis, intervention + -ism.