What is war? What are the causes of war?

What will be an ideal response?

The ideal answer should include:
1. War is interstate violence that is sustained and organized and (usually) involves hostilities between the regular military forces of the states.
2. Entire books have been written on the causes of war. The findings are inconclusive, but we can identify some factors that increase the likelihood of wars. These include:
- newer countries are more war-prone;
- war is more likely in states that have effectively socialized their citizens to accept the government's actions on national security;
- the most warlike states have rising prosperity but are relatively poor, though they are not the very poorest states;
- countries with desirable geopolitical features have a higher probability of warfare;
- countries not well linked to the global economy are more likely to engage in war;
- states that are the most highly militarized, and especially those that are rapidly expanding their military power, are more warlike; and
- a high degree of nationalism makes states more war-prone.