Let's rephrase that last sentence ("is unbreakable by any means currently known") to "is unbreakable by any means currently within a reasonable timeframe" which is a key addition.
Given enough time and computing power, you will eventually be able to decrypt anything (after all, its just a bunch of 1's and 0's that are sent "over the air").
But that's not going to happen in real time and as long as the relevant keys are cycled you should be on the safe side as long as the bad guys don't get access to the keys somehow...