Defence, in the context of national security, refers to the measures taken by a country to protect itself against external threats and ensure the safety of its citizens. It encompasses a range of activities, strategies, and resources aimed at deterring and defending against potential aggressors. The primary goal of defence is to maintain sovereignty and territorial integrity, safeguarding a nation’s borders from any form of invasion or attack. This involves maintaining a strong military force equipped with modern weapons, advanced technology, and well-trained personnel. Additionally, defence strategies often include intelligence gathering, surveillance, and analysis to identify potential threats and prevent them from materializing. The defence also plays a vital role in promoting regional and global stability. By contributing to international peacekeeping efforts and participating in alliances, countries can work together to address common security challenges. Collaboration on defence matters facilitates information sharing, joint training exercises, and mutual support during times of crisis. In recent years, the defence has expanded beyond traditional military capabilities to encompass cybersecurity, space defence, and hybrid warfare. As technology evolves, so do the threats faced by nations, necessitating constant adaptation and innovation in defence strategies. The allocation of resources towards defence is a significant aspect of national budgeting. Governments must strike a balance between investing in defence capabilities and meeting the needs of their citizens in areas such as healthcare, education, and infrastructure development.