The proposition that the correct position is determined by those strong enough to enforce it. Normally people use this phrase disparagingly since, for example, just because Andrew Jackson had the power to ignore the Supreme Court and forcibly relocate Native Americans to Oklahoma over the Trail of Tears does not make it right. Similarly for various underhanded deals. Personally, I say that sometimes we cannot determine to everyone's satisfaction who is right or wrong, but we can often determine to everyone's satisfaction who is the winner. In human relations, sometimes this is the best you can do. That's why they make war.