Ferrari's strategy fell apart in Russia, with team orders telling Charles Leclerc to give Sebastian Vettel the apex and the lead into the first corner, with a view to switching their positions around later.
But as the race developed and Vettel sped into the distance, it appeared that the German was not keen to stick to the pre-arranged strategy and there was a heated exchange across team radio as to which approach the team was taking.
Below is the full discussion between the team, as broadcast.
LAP 6
FERRARI TEAM TO LECLERC: Sebastian will let you by, next lap.
VETTEL: I would have passed him anyway. Let's break away for another two laps, let me know.
LAP 7
FERRARI TEAM TO VETTEL: Let Charles by.
VETTEL: He will have to close up.
LECLERC: You put me behind, I respected everything. We'll speak later. But now it is difficult to close the gap obviously.
LAP 8
FERRARI TO VETTEL: He's trying to close the gap and let him by, he is 1.4 (secs) behind.
LAP 9
FERRARI TO VETTEL: We are looking to plan C, Charles 1.9 (secs) behind.
LAP 10
FERRARI TO LECLERC: Charles we will do the swap a bit later on, Lewis is a bit close and we want to push now, just focus on your race.
LAP 10
LECLERC: I completely understand. I gave you the slipstream, no problems, but then I tried to push at the beginning of the race. But... aggggh, no problems. Manage the situation.
ENDS