In the modern day, whether your stresses stem from Premier League title races or lower league promotion pushes or even a relegation dogfight - club football tends to take priority for most supporters.
Enticed by the tribalism of turf war, cities such as London, Manchester and Liverpool all see their populations divided by club colours. Whether it be Arsenal against Tottenham, City versus United or Liverpool and their foes Everton - the passion felt from each fanbase makes for the most fiercely contested rivalries.
International football has a reputation for not always carrying that same passion given games occur at a far lesser rate, sometimes months apart and even then you may still not be drawn a real grudge-match. However, every so often a tie will be drawn - usually at major tournament level as well, that will match up two nations that do not see eye to eye.
