That there is a right to freedom of speech does not mean that we have an obligation to make sure that everyone around the world has freedom of speech. Freedom of speech and expression is indeed a human right in the universal declaration of human rights however this is something that it is obligated for governments to uphold for their own people rather than for other countries to enforce. If governments are infringing on the freedoms of their people the correct way to counter this is through international diplomacy rather than seeking to undermine that state.  The responsibility to protect, itself controversial, was only ever meant to apply to the very worst human rights violations - such as the genocide in Rwanda. If there are massacres of civilians and all other options have failed then there may be a need to intervene to prevent more killing. However violations of freedom of speech are not something that is time dependent. Diplomacy may often take a long time but can eventually work, as is being shown in Burma's opening up