How successful was the British and French policy of NonIntervention?

The British and French policy of Non-Intervention during the Spanish Civil War (1936-1939) was largely unsuccessful. While it aimed to prevent the conflict from escalating into a larger war and to maintain neutrality, it ultimately allowed the Fascist forces, particularly Franco's Nationalists, to receive substantial support from Nazi Germany and Fascist Italy. This imbalance of aid contributed to the Nationalists' victory, undermining the very objective of the Non-Intervention policy and highlighting the limitations of diplomatic efforts in the face of ideological confrontations.