Europe's biggest football extravaganza, Euro 2016 begins in France today. 24-teams will vie for the supremacy in European football, during the one month-long marathon. Hosts France will launch the tournament with a Group A game against Romania tonight at the Stade de France. The stadium with a capacity of over 81,000 people will also host the final on July 10. Defending Champions Spain are aiming to win an unprecedented third straight European title. Besides World Champions Germany, Italy and Portugal are the other favourites, while England and Belgium are rated as dark horses this time. World Cup semi-finalist the Netherlands have failed to qualify. Meanwhile, unprecedented security arrangements have been made for the month long European Football tournament which kicks off today . More than 90 thousands police, soldiers and private guards will be deployed at the tournament, with seven million fans expected to visit the 10 host cities. The US and British government have both warned fans they could be at risk. But organisers, Uefa, and the French authorities, insist they have done everything possible to keep the 2.5 million spectators expected at the 51 matches safe. France remains under a state of emergency after last November's attacks on Paris, when 130 people were killed.