lemon8or wrote:For example, a unit of space marines is within range of 2 Icons of despair, which give a -1 to leadership rolls. Would this unit suffer -2 to it's leadership rolls?
Like Ghaz said, there is no one size fits all answer. It all depends on the wording of the rule, and whether it says it applies only once or not.
Generally, ones that do not stack will say "If X is in range of
any Y" rather than "a Y".