In the legacy of the ideological system left by President Ho Chi Minh, there is the ideology of diplomatic relations between Vietnam and countries around the world, especially with big countries. Ho Chi Minh's diplomatic ideology includes a system of principles and views on contemporary issues, international guidelines, strategies, tactics, and foreign policy of Vietnam in the modern period... Based on the principle the principle of "unchanging things, responding to all changes", Ho Chi Minh's diplomatic thought has illuminated Vietnam's foreign policy under the Party's leadership for more than 90 years. This ideology has actively contributed to opening peaceful and friendly relationships between Vietnam and countries around the world; through this, Vietnam has enlisted the support of progressive public opinion in the world for the struggle of the Vietnamese people for independence, sovereignty and national territorial integrity. Ho Chi Minh's diplomatic ideology, including the ideology of relations between Vietnam and major countries, continues to be the guideline for Vietnam's foreign affairs activities today.