During World War 2, Ireland declared neutrality to assert its sovereignty and independence following the partition of Ireland in 1921. Ireland pursued a policy of pro-Allied neutrality by secretly assisting Britain with things like weather reports and allowing British planes to pass through Irish airspace, while maintaining economic trade relationships. This policy was popular among the Irish population as it allowed Ireland to avoid direct involvement in the war and the suffering experienced elsewhere. However, neutrality also led to economic difficulties and censorship within Ireland.