The resolution is an update of Security Council resolution 660 and ultimately gives authorization for invasion. "Authorizes Member States ... to use all necessary means" to bring Iraq into compliance with previous Security Council resolutions if it did not do so by January 15, 1991.
RESOLUTION 678 (1990)
The Security Council,
Recalling, and reaffirming its resolutions 660 (1990) of 2 August (1990), 661 (1990) of 6 August 1990, 662 (1990) of 9 August 1990, 664 (1990) of 18 August 1990, 665 (1990) of 25 August 1990, 666 (1990) of 13 September 1990, 667 (1990) of 16 September 1990, 669 (1990) of 24 September 1990, 670 (1990) of 25 September 1990, 674 (1990) of of 29 October 1990 and 677 (1990) of 28 November 1990.
Noting that, despite all efforts by the United Nations, Iraq refuses to comply with its obligation to implement resolution 660 (1990) and the above-mentioned subsequent relevant resolutions, in flagrant contempt of the Security Council,
Mindful of its duties and responsibilities under the Charter of the United Nations for the maintenance and preservation of international peace and security,
Determined to secure full compliance with its decisions,
Acting under Chapter VII of the Charter,
1. Demands that Iraq comply fully with resolution 660 (1990) and all subsequent relevant resolutions, and decides, while maintaining all its decisions, to allow Iraq one final opportunity, as a pause of goodwil, to do so;
2. Authorizes Member States co-operating with the Government of Kuwait, unless Iraq on or before 15 January 1991 fully implements, as set forth in paragraph 1 above, the above-mentioned resolutions, to use all necessary means to uphold and implement resolution 660 (1990) and all subsequent relevant resolutions and to restore international peace and security in the area;
3. Requests all States to provide appropriate support for the actions undertaken in pursuance of paragraph 2 of the present resolution;
4. Requests the States concerned to keep the Security Council regularly informed on the progress of actions undertaken pursuant to paragraphs 2 and 3 of the present resolution;
5. Decides to remain seized of the matter.