What are the differences in the threats that people in the Third World face and those living in the First World face?

(i) The Third World countries face the threats not only from outside their borders, mostly from neighbours, but also from within. They quarrelled over borders and territories or control over people and populations or all of these simultaneously. On the other hand, most of the First World countries, particularly the powerful Western European countries, faced no serious threats from groups or communities living within those borders. These countries faced threats only from outside their borders.

(ii) New states of the Third World face threats from separatist movements which wanted to form an independent country. Sometimes  external and internal threats mearged. A neighbour might help or instigate an internal seperatist movement leading to tensions between the two neighbouring countries.