Celtic and Rangers are the two biggest teams in Scotland, and the "Old Firm" rivalry is one of the most heated football rivalries in the world. The "Old Firm" rivalry is largely motivated by religious sectarianism, and is related to the conflict between Loyalists and Republicans in Northern Ireland. Rangers' hooligan element (the ICF) have a strong rivalry with Celtic's CSC and Aberdeen's ASC, with Celtic being their traditional cultural enemy. They have also had major clashes with Motherwell, Hibs, Partick Thistle and Dundee's Utility. At the 2008 UEFA Cup Final when Rangers reached the final, Rangers fans and the ICF rioted in Manchester with a huge media spotlight