Mission Risk Game RISK Game Doubt? Any RISK Experts? VERY IMPORTANT?

RISK game doubt? any RISK experts? VERY IMPORTANT? - mission risk game

Ok, we had an argument about a man on a mission in which the risk was "across-1 area in 5 continents, not to conquer the controlled 3 continents and is able to" 5, since only 3 had left .. .
So the question is ... It is very important, because it is very different from "control" is to conquer as ""
if the mission would be to capture only "2 territories on all continents, and it would not be possible to complete the mission because it is not conquest, but the control?
Please tell me! it kills almost one for this ...
because, for example, if a mission to conquer in 12 territories, it must be said in this train and the regions which have already so we do not win these doubts

THANKS A LOT! HAVE A NICE DAY!