multiplication of cyber-attacks and the promotion of terrorism through ICTs. In addition, Cuba attaches high priority to promoting the peaceful and legitimate use of ICTs, as well as the numerous opportunities offered by cyberspace for the development and well-being of humanity, while expressing great concern over the covert and illegal use by individuals, organizations and States of other nations' information systems to attack third countries, because of their potential to spark off international conflicts, since some governments have even expressed the possibility of retaliating against such attacks using conventional weapons. The evidence of the above, as well as the proliferation of cybercrime and cyberterrorism, confirms the need for effective and urgent measures within the framework of international cooperation to counteract these threats and to promote an open, secure, stable and peaceful cyberspace from which all Member States can benefit. The 2015 report of the Group of Governmental Experts did not endorse the approach that, for the purposes of International Law, cyber-attacks should be considered comparable to armed attacks, and that, therefore, in the event of a cyber-attack, the country under attack would have the right to act with measures of force or sanctions, invoking Article 51 of the Charter of the United Nations, which recognizes the right of States to self-defense in the event of (armed) aggression. This becomes a problem because there is not an accepted definition of what "aggression" using ICTs entails, using the one contained in General Assembly resolution A/RES/29/3314 of 1974, which does not take into account the use of ICTs by one State to attack another.