An ethical dilemma is a complex situation that often involves an apparent mental conflict between moral imperatives, in which to obey one would result in transgressing another. Sometimes called ethical paradoxes in moral philosophy, ethical dilemmas are often invoked in an attempt to refute an ethical system or moral code, or to improve it so as to resolve the paradox.
These arguments can be refuted in various ways, for example by showing that the claimed ethical dilemma is only apparent and does not really exist (thus is not a paradox logically), or that the solution to the ethical dilemma involves choosing the greater good and lesser evil (as discussed in value theory), or that the whole framing of the problem omits creative alternatives (such as peacemaking), or (more recently) that situational ethics or situated ethics must apply because the case cannot be removed from context and still be understood. See also case-based reasoning on this process. An alternative to situational ethics is graded absolutism.
Perhaps the most commonly cited ethical conflict is that between an imperative or injunction not to steal and one to care for a family that you cannot afford to feed without stolen money. Debates on this often revolve around the availability of alternate means of income or support such as a social safety net, charity, etc. The debate is in its starkest form when framed as stealing food. Under an ethical system in which stealing is always wrong and letting one's family die from starvation is always wrong, a person in such a situation would be forced to commit one wrong to avoid committing another, and be in constant conflict with those whose view of the acts varied.
However, there are no legitimate ethical systems in which stealing is more wrong than letting one's family die. Ethical systems do in fact allow for, and sometimes outline, tradeoffs or priorities in decisions. Some have suggested that international law requires this kind of mechanism to resolve whether World Trade Organization (WTO) or takes precedence in deciding whether a WTO notification is valid. That is, whether nations may use trade mechanisms to complain about climate change measures.