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Norway
Practice Relating to Rule 14. Proportionality in Attack
Norway’s Military Penal Code (1902), as amended in 1981, provides:
Anyone who contravenes or is accessory to the contravention of provisions relating to the protection of persons or property laid down in … the two additional protocols to [the 1949 Geneva] Conventions … is liable to imprisonment. 
Norway, Military Penal Code, 1902, as amended in 1981, § 108(b).
Norway’s Penal Code (1902), as amended in 2008, states:
Any person is liable to punishment for a war crime who in connection with an armed conflict … launches an attack in the knowledge that such attack will cause incidental loss of life or injury to civilians or damage to civilian objects … which would be excessive in relation to the concrete and direct overall military advantage anticipated. 
Norway, Penal Code, 1902, as amended in 2008, § 106(c).
In 2006, during a debate in the UN Security Council, the permanent representative of Norway stated regarding the situation in Gaza: “The current operations raise a number of issues of international law, whether they are police operations or military operations. According to international law any use of violence shall be necessary and proportionate.” 
Norway, Statement by the permanent representative of Norway to the United Nations in the Security Council regarding the situation in Gaza, 30 June 2006.
In 2006, during a UN Security Council meeting, the Norwegian Minister for Foreign Affairs stated with regard to the situation in Lebanon and Gaza: “While recognizing Israel’s inherent right to self-defence, all use of armed force must satisfy [the] requirements of … proportionality. … Indiscriminate and excessive use of force [is] prohibited. Norway urges Israel not to resort to disproportionate action.” 
Norway, Statement by the Minister for Foreign Affairs in the UN Security Council regarding the situation in Lebanon and Gaza, 21 July 2006.
In 2009, in a statement at the Second Review Conference of the Ottawa Convention on Anti-Personnel Mines, the Minister of Foreign Affairs of Norway stated: “In armed conflicts, international humanitarian law accepts the need to strike a balance between military necessity and humanitarian concerns.” 
Norway, Statement by the Minister of Foreign Affairs at the Second Review Conference of the Ottawa Convention on Anti-Personnel Mines, 3 December 2009.