Realism (Edexcel A Level Politics): Revision Note

Exam code: 9PL0

Jane Hirons

Written by: Jane Hirons

Reviewed by: Lisa Eades

Updated on

Optional unit

Examiner Tips and Tricks

For Component 3, students only study ONE route: USA Politics (3A) or Global Politics (3B)

States as key actors

  • Realists argue that they see the world as it is, rather than what people may hope it to be

  • Realist theorists consider states to be the most significant actors in global politics 

    • Power is the most significant concept 

    • Human beings are selfish and competitive by nature and therefore so are states

    • Other actors may exist and attempt to exert power but they are always subjected to the will of powerful states

    • Powerful states have higher levels of external sovereignty, meaning they play a more significant role in global politics compared with other states 

Relationships between states

  • All states possess some kind of power or ability to threaten or actually inflict damage to other states

    • Traditionally this could be linked to militarism but can also be linked to cybersecurity

  • States can never know the true intentions of other states and so should interact with caution

  • The primary goal of all states is its own needs and, ultimately, its survival 

The balance of power

  • Some realists believe that the best chance of maintaining a stable world order is if the balance of power between states is maintained

    • In a multipolar world, this means a group of powerful states maintain their positions of power in relation to each other

    • In a bi-polar world, such as during the Cold War with the Soviet Union and USA, each of the two states kept up with each other in terms of power capability

      • It is debatable as to whether the Cold War can be defined as a stable world order period, as both primary states were constantly completing and threatening world peace

    • In a unipolar world, such as the situation which we see with the USA, there is no balance of power

      • One state dominates, contradicting the realist balance of power theory 

    • Some argue the unipolar world system is unprecedented and unsustainable because balance is missing and inevitably hegemony will be challenged

Defensive realists

Offensive realists

  • Believe that states will seek to balance their power against a hegemonic  state (in a unipolar system)

  • This may mean weaker states will join together in a military or trade alliance that will diminish the power of the unipolar system and create a more balanced world order

  • Believe that  states want to achieve hegemonic power

  • In a unipolar system they will do everything in their power to overtake the single state with the most power so long as their own state is secure

  • This is the ultimate goal - not balance - advocated by John Mearshimer

International anarchy

  • The international system is anarchic, meaning:

    • There is no higher power than the state

      • Any sense of world order being provided by a global governance institution or a universal human desire for peace, is fantasy

    • All states must depend on themselves for survival

      • Every state must maximise their power and security and never rely on another state or actor

    • States are constantly competing with each other and co-operation is only undertaken if each state is convinced it has more to gain than the other  

    • A zero sum game is at play where one state’s gain is another state’s loss

The billiard ball model

Pool balls painted with various national flags on a green table, with a lone ball featuring the United States flag positioned separately.
  • The billiard ball model explains global politics by treating states as separate, independent units operating in an anarchic international system

    • States are like billiard balls

      • Each has a “hard shell” of sovereignty, so what happens inside the state is largely hidden from the outside and the state acts as one united actor

    • Interactions are unpredictable

      • There is no guaranteed method for resolving disputes, so states rely on self-help to survive and protect their interests

    • Whether states cooperate, compete or clash depends heavily on the distribution of power in the system, which shapes how likely conflict is

Inevitability of war

  • Realists view conflict as inevitable

    • The constant competition for power (economic, military and political) eventually leads to conflict

    • International law will be ignored if states gain no benefit from following it,  potentially leading to conflict 

Examples that support a realist view

  • Russia ignores widespread condemnation for its invasion of Ukraine

    • Despite being a permanent member of the Security Council, it has violated numerous international laws in the process

  • Despite decades of interventions by global governance institutions and other states, Israel ignored calls for settlements to be halted in territories that legally belong to Palestinians

    • It ignores widespread condemnation from multiple actors and breaks many international laws

    • Israel also continues to persist in its use of disproportional force in a war against Palestinians as an act of genocide

  • A realist would argue these examples constitute strong evidence that states are only interested in their own gains and that there is no power greater than that of the state

The security dilemma

  • In realism. the security dilemma is the idea that actions taken by a state to increase its own security can unintentionally make other states feel less secure, leading to rising tension and conflict - even when no one wants war

  • The Security Dilemma is sometimes called a spiral model

    • In an anarchical world system each state is only concerned with itself

    • Conflict is inevitable even if all states recognise that it is not in their best interest

A spiral diagram illustrating the escalation of military tension, showing steps in distrust and arms race as states react to State A's military build-up.

Case Study

The spiral model and the Ukraine conflict

Silhouettes of armed soldiers face each other, separated by barbed wire. Background shows Russia's flag on the left and Ukraine's flag on the right.
  • Since the end of the Cold War, NATO has expanded eastwards, incorporating several former Soviet Union states

  • NATO states viewed expansion as a defensive measure to promote security and stability

  • Russia interpreted this expansion as an offensive threat to its security and regional influence

Russia’s response

  • In response, Russia increased military activity and influence in its near abroad

  • This included the annexation of Crimea in 2014 and support for separatists in eastern Ukraine

  • Russia framed these actions as defensive, aimed at protecting Russian speakers and preventing NATO encirclement

Escalation into war

  • NATO responded by increasing military support for Ukraine and strengthening its eastern flank.

  • Russia interpreted this as further aggression, contributing to the decision to launch a full-scale invasion of Ukraine in 2022.

  • Each side’s attempts to increase security instead reduced overall security, creating a classic spiral of escalation

Significance

  • The Ukraine conflict demonstrates the Spiral Model clearly:

    • defensive actions by one side

    • misinterpreted as offensive by the other

    • leading to escalating hostility and war

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Jane Hirons

Author: Jane Hirons

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Jane has been actively involved in all levels of educational endeavors including designing curriculum, teaching and assessment. She has extensive experience as an international classroom teacher and understands the challenges students face when it comes to revision.

Lisa Eades

Reviewer: Lisa Eades

Expertise: Business Content Creator

Lisa has taught A Level, GCSE, BTEC and IBDP Business for over 20 years and is a senior Examiner for Edexcel. Lisa has been a successful Head of Department in Kent and has offered private Business tuition to students across the UK. Lisa loves to create imaginative and accessible resources which engage learners and build their passion for the subject.