Goff said any intervention to fight IS should be UN-sanctioned, there needed to be “clear and achievable objectives”, and there should be an acceptable level of risk.
Labour always claim an intervention must be UN sanctioned, which generally means China and Russia should get a veto on our defence and foreign policy. But regardless has he missed UN Security Council resolution 2249 (2015):
Calls upon Member States that have the capacity to do so to take all necessary measures, in compliance with international law, in particular with the United Nations Charter, as well as international human rights, refugee and humanitarian law, on the territory under the control of ISIL also known as Da’esh, in Syria and Iraq, to redouble and coordinate their efforts to prevent and suppress terrorist acts committed specifically by ISIL also known as Da’esh as well as ANF, and all other individuals, groups, undertakings, and entities associated with Al-Qaida, and other terrorist groups, as designated by the United Nations Security Council, and as may further be agreed by the International Syria Support Group (ISSG) and endorsed by the UN Security Council, pursuant to the statement of the International Syria Support Group (ISSG) of 14 November, and to eradicate the safe haven they have established over significant parts of Iraq and Syria;
There’s your UN sanction and your clear objective.