 Complete the following phrase:  The end of the 20th century and the beginning of the 21st century have seen many instances of state armies attempting to suppress insurgencies, terrorism, and other forms of asymmetrical warfare. Clausewitz did not focus solely on wars between countries with well-defined armies. The era of the French Revolution and Napoleon was full of revolutions, rebellions, and violence by non-state actors, such as the wars in the French Vendée and in Spain. Clausewitz wrote a series of Lectures on Small War and studied the 