Argentina, Messi on brink of World Cup exit after Croatia drubbing.
French tactician says team proud of their effort and have shown they can play football at the
Germany began their World Cup defence with a 1-0 defeat to Mexico on Sunday.
There are close to 15,000 volunteers spread across the 12 World Cup venues in 11 Russian cities.
Mexico are expected to take the initiative against a desperate South Korea team.