{i} supporter of interventionism, one who supports the policy of interfering in the affairs of other countries
Interventionist policies are policies which show an organization's desire to become involved in a problem or a crisis which does not concern it directly. the interventionist industrial policy of the Wilson government laissez-faire An interventionist is someone who supports interventionist policies. based on the belief of a government or organization that it should take action or spend money to influence the economy (=financial system) or what happens in other countries interventionist approach/role/policy