How can we distinguish the ‘old wars’ from the ‘new wars’ of the young generation?

In order to determine whether or not there has been a shift from ‘old wars’ to ‘new wars’, first we must ask two main questions; firstly, is there a distinction between ‘old’ and ‘new’ wars? And secondly, if there is a distinction, how new are these ‘new’ wars?  The first question can be resolved by looking at the ‘new wars’ theory in tandem with current examples against traditional forms of warfare which took place in the early to mid-20th century. The second question can be answered through the analysis of historical discourse notwithstanding whether these ‘new’ wars are indeed a new phenomenon or if they have been occurring throughout history.