There is no greater honour in football than representing your country at a World Cup finals, but that can also lead to emotions running high and there have been some spectacular fallouts over the years as a result.
This year's World Cup in Qatar is no exception and we have already seen cracks starting to form in both the Belgium and Cameroon camps, with a lack of cohesion off the pitch rarely leading to success on it.
Belgium were ranked number two in the world heading into this year's World Cup, with the general consensus being that this would be the last chance for their 'Golden Generation' to win a major international tournament at odds of .
However, this was seemingly not a view shared by midfielder Kevin De Bruyne, who claimed the team were already "too old" to go all the way in Qatar following their unconvincing 1-0 victory over Canada in their Group F opener.
De Bruyne's words may have still been ringing in the ears of the rest of the squad as they produced a lacklustre display during Sunday's 2-0 defeat to Morocco, a result that leaves Belgium facing an uphill battle to reach the knockout stages, and they are 4/7 to not get out of their group.
The Manchester City midfielder's comments certainly hadn't sat well with team-mate Jan Vertonghen, as speaking after the defeat to Morocco, the defender quipped: "I guess we attack badly because we are also too old up front".
Only time will tell if this exchange of opinion ends up boiling over within Belgium's camp. The Red Devils realistically need to beat Croatia in their final group fixture on Thursday at odds of to advance.
There has also been some unrest within the Cameroon camp in Qatar, with goalkeeper Andre Onana having been left out of the side for their second group match against Serbia following a reported falling out with head coach Rigobert Song.
Song revealed after Monday's 3-3 draw that Onana had asked not to play, with reports suggesting the duo had fallen out over the team's style of play.
Devis Epassy stood in for Onana against Serbia and it remains to be seen whether the Inter Milan stopper will return to the starting XI for the Indomitable Lions' final group fixture against Brazil on Friday.
Cameroon are 11/1 to beat the five-time world champions, and only a win will do if they are to stand any chance of reaching the knockout stages.
Perhaps the most infamous World Cup fallout came ahead of the 2002 World Cup, and it involved former Manchester United captain Roy Keane and his then Republic of Ireland manager Mick McCarthy.
Keane was also the skipper of the Irish side that headed to Saipan to prepare for the finals in Japan and South Korea, but the combative midfielder was not happy with the conditions of the camp and how they were preparing for the tournament under McCarthy.
This led to a falling out between the two men and Keane ultimately left the camp before the tournament even began, spurning requests to return from numerous people, including then Irish Prime Minister Bertie Ahern.
Without Keane, Ireland reached the round of 16 at the finals before bowing out on penalties to Spain. Could they have gone even further with their captain in the team? Unfortunately we will never know.
Back then tensions were already believed to be high within the camp ahead of their tournament opener against Uruguay and, following that 0-0 draw, the French Football Federation sent forward Nicolas Anelka home for a reported expletive rant against head coach Raymond Domenech.
Anelka's departure riled the rest of the squad and they staged a public protest against the decision by abandoning an open training session, although the FFF stood by their call and the former Chelsea forward did not return.
This of course did not help France on the pitch, as they lost their final two group games against Mexico and South Africa and exited the competition with a whimper.
All 23 members of the squad were then subsequently banned for one match for their involvement in the protest.