# Responsibility to defend Earth as a core principle of the planetary defense security regime

## TL;DR

The paper suggests creating a global norm called Responsibility to Defend Earth to guide international efforts in protecting the planet from threats.

## Contribution

It introduces the Responsibility to Defend Earth (R2DE) as a new normative principle for planetary defense cooperation.

## Key findings

- Current planetary defense efforts lack a unifying normative principle.
- International cooperation and policy changes are needed to establish a planetary defense security regime.

## Abstract

The planetary defense community should consider the development of a Responsibility to Defend Earth (R2DE) as a foundational normative principle for a future planetary defense security regime. This requires thorough deliberation and consensus-building to definitively answer the question: “What is the value we secure?”

This manuscript proposes the Responsibility to Defend Earth (R2DE) as a core principle for planetary defense, aiming to foster international cooperation and policy changes. Despite technical advancements and creation of bodies like IAWN and SMPAG, it highlights the need for consensus on action and means.