Mercedes Formula 1 team-mates Nico Rosberg and Lewis Hamilton's relationship was at breaking point even before the Monaco Grand Prix, due to a bust-up in Spain a fortnight ago.
Although the breakdown in the team-mates' relations was made public in the wake of Rosberg's controversial pole position in Monte Carlo, the pair had already fallen out after the race at Barcelona.
That was when it emerged that, in a bid to keep his lead, Hamilton went against team protocol and turned up his engine settings to maximum performance in the closing stages.
His actions left Rosberg feeling that he had been robbed of a chance of victory through unfair means - which forced an apology from Hamilton.
It was against that backdrop that tensions surfaced in Monaco, which is why team boss Toto Wolff is not surprised that Hamilton felt so angry after the qualifying controversy.
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All I can say is .. Karmas a beeetch !