intends to provide a framework and political direction for NATO's continuing transformation in the coming 10 to 15 years. More specifically, the document expresses the belief that the principal threats to the Alliance in the coming decades are terrorism, proliferation, failing states, regional crises, misuse of new technologies, and disruption of the flow of vital resources. According to this document, the Alliance should adapt to these new threats and set out the Alliance vis-a-vis capability issues, planning disciplines and intelligence for the next 10 to 15 years, including among others the need for joint expeditionary forces and the capability to deploy and sustain them over long periods of time. The document further underlined that NATO's forces should be able to conduct a variety of missions, from high to low intensity, and emphasized the likelihood that NATO will need to carry out a greater number and range of smaller operations. The CPG also confirmed the principle that 40% of the member states' military forces must be re-deployable, and 8% must constantly be on operations abroad. This principle makes it, among other things, possible to effectively compare the contributions made by various states, irrespective of the size of their populations. The CPG policy document is regarded as self-contradictory for at least two reasons. Firstly, it identified the two greatest threats to NATO as terrorism and the proliferation of weapons of mass destruction (WMD), whilst simultaneously reaffirming the 1999 Strategic Concept as "remaining valid" despite the fact that it barely mentioned these threats. Secondly, the document states that collective defence remains the core purpose of NATO, but at the same time emphasizes potential NATO contributions to conflict prevention and crisis management, and the potential planning and management of missions like that in Afghanistan. The Riga Declaration even described the capability for such missions as NATO's "top priority". Additionally, Jaap de Hoop Scheffer wanted and expected a new Strategic Concept to be debated and agreed upon by 2008, reinforcing already existing views that the CPG will most likely last much less than the 10 to 15 years as the guiding policy document. Energy security The Riga summit was the first NATO summit that underscored the need for energy security, following the Russia-Ukraine gas dispute. The "Riga Summit Declaration" (par. 45) stated that "Alliance security interests can also be affected by the disruption of the flow of vital resources" and that it supported "a coordinated,