The main security problem that any state faces today is protecting its<br />citizens in countering organised crime and terrorism. Wars between states are less<br />frequent than in previous eras. Border defence and border security are distinct<br />missions requiring different forces with different training and different equipment.<br />Border defence is predominately against the armed forces of other states requiring<br />tanks, aircraft and ships. Traditionally, border security includes the mission roles of<br />immigration, crime, agriculture, finance, disease control and terrorism. Intelligence<br />gathering and analysis using three methodologies - trends and patterns, frequency,<br />and probability – provides a solution to the large and expensive armed forces for<br />territorial border defence and defines the ability to succeed in border security.