Congresses -- 7 Security, International -- 4 Congresses 3 Terrorism -- 3 Foreign relations -- 2 Hijacking of ships -- 2 Pirates -- 2 more ... Strategic aspects 2 Commercial treaties -- 1 Conflict management -- 1 Government policy -- 1 Insurgency -- 1 International cooperation 1 International cooperation -- 1 Islam and politics -- 1 Islam and state -- 1 Islamic fundamentalism -- 1 Merchant marine -- 1 National security -- 1 Naval strategy -- 1 Politics and government -- 1 Prevention 1 Prevention -- 1 Relations -- 1 Religion -- 1 Religion and politics -- 1 Religious aspects -- 1 Sea-power -- 1 Security measures 1 Social conflict -- 1 less ...