Singapore and the Third Indochina War

H1 History - syllabus 8838, 2027

What this lesson teaches

  • I can judge how Singapore responded to the Cold War in Southeast Asia, and why.

    Syllabus 8838, Theme III, Learning Outcomes. evaluate Singapore's responses to the development of the Cold War in Southeast Asia

Make a guess

Vietnam invaded Cambodia in 1978. What do you think Singapore's position was?

  1. It welcomed the end of the Khmer Rouge regime.
  2. It strongly opposed the occupation, defending small states' sovereignty.
  3. It stayed silent to keep good relations with Vietnam.
Show the answer

It strongly opposed the occupation, defending small states' sovereignty.

If a neighbour could overthrow a government by force, a small state like Singapore could be next.

Singapore was one of the strongest opponents of Vietnam's occupation of Cambodia, defending the principle that small states must not be invaded.

Singapore saw Vietnam's invasion of Cambodia in 1978 as a direct threat to small states. If a stronger neighbour could overthrow a government by force and get away with it, Singapore's own survival could be at risk.

Singapore took a hard line within ASEAN. It argued against accepting the Vietnamese-installed government and worked to keep the issue on the world's agenda.

At the United Nations, Singaporean diplomats were active in ASEAN's campaign for a Vietnamese withdrawal. In 1982 Singapore helped build the Coalition Government of Democratic Kampuchea. It joined non-communist groups with the Khmer Rouge. The coalition kept Cambodia's UN seat out of the hands of the Vietnamese-backed regime.

On 1 March 1979, replying to a letter from US President Jimmy Carter, Lee Kuan Yew wrote that "Vietnam had changed the 'ground rules' of inter-state interference". Until then, communist states had interfered in their neighbours secretly, by arming and sheltering rebels. Vietnam had now invaded openly. Lee warned that Thailand was in the most immediate danger. Singapore pressed the great powers to make sure that aggression did not pay.

Lee's letter
1 March 1979, to President Carter: Vietnam had changed the "ground rules" by invading openly.
CGDK
1982, with Singapore's support.
Principle
Small states must not be invaded by stronger neighbours.

Worked example: Linking national interest and principle

Why did Singapore oppose the occupation so strongly?

  1. Principle: sovereignty and non-interference protect small states.
  2. Interest: Singapore's survival depended on that principle.
  3. Region: support for Thailand, the frontline state.
  4. Method: diplomacy through ASEAN and the UN.

Watch out for this

Singapore supported the Khmer Rouge because it approved of its policies.

Singapore opposed Vietnam's use of force. It backed a coalition including non-communist groups to deny legitimacy to the occupation, not to endorse the Khmer Rouge's rule.

Check your understanding

Why did Singapore see the invasion of Cambodia as a threat to itself?

  1. Vietnam had openly threatened to invade Singapore once Cambodia had fallen.
  2. Cambodia was Singapore's main trading partner.
  3. It undermined the principle that protects small states from stronger neighbours.
Show the answer

It undermined the principle that protects small states from stronger neighbours.

Right. Singapore's survival depended on that principle.

The Wise Otter

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