Bulgarian Defense Minister Nikolay Nenchev and his Greek counterpart Panagiotis Kammenos agreed in Sofia to work for strengthening cooperation between the countries in the sphere of defense and exchange of information. Matching opinions in relation to the refugee crisis and recent terrorist acts were also voiced. It was agreed that a joint exercise of special forces at the Bulgarian-Greek border should take place, which would demonstrate unity and strength. Minister Nenchev expressed appreciation over the readiness of his Greek counterpart to support possible calls from Sofia for strengthening the presence of NATO in the Black Sea in order to prevent refugee waves directed to Bulgaria.