Dr Liam Fox is a former Defence and International Trade Secretary, and is MP for North Somerset.
National security is the first duty of the government. That means protecting the country and its people from outside threats, seen and unseen.
A Conservative government must be willing to spend what is necessary to achieve this, even if it means diverting funding away from other areas of domestic spending. Maintaining wider security includes controlling our borders and diminishing our strategic dependence by improving elements such as food security and energy security.