The ecumenical movement of the 20th century was a quest for unity born of a missionary concern for the world. Thus, from the beginning of present-day ecumenism, mission has been inextricably linked with unity. This volume explores the themes of unity, mission, and their relationship. Seventeen Roman Catholic and Protestant scholars offer essays in honour of George Vandervelde, a leading evangelical ecumenist from the Reformed tradition.

On 12 September 2007, the Air University commander tasked the Air Force Research Institute to provide an "outside-the-beltway" look at what the United States Air Force (USAF) should be about in the future, specifically what the service should look like 10-15 years from now. This timeframe was far enough outside the Fiscal Year Defense Plan to avoid some current programmatic boundaries, but not so far out as to be immune to current trends. Additionally, constraining the "future" to 15 years limits the rather miraculous invention of extraordinary weapons found in some war games and other future studies-for example, rods from space-and similarly bounds the geo-political landscape. The goal of this study is to identify the enduring attributes of our nation's air, space, and cyberspace force in context of major transitions. The tasking construct identified that the study should avoid a focus on hardware and resourcing, and implied the focus should be on roles, missions, and functions "such as the transition from the Cold War to Long War-or whatever it is to be called-era." Finally, the tasking identified the study's target audience as the presidential transition teams, with a delivery date "prior to the next election." Strategy in the post-Cold War era remains fluid. Without a focus on a single foe, it is often complicated and debatable. This study attempts to neither reinvent the USAF nor protect the status quo at the expense of conventional wisdom. The intent is to understand the value of the service's contribution to national security and, where appropriate, offer considerations for change. This study is informed by an understanding of airpower history and a realization of current USAF systems and strategies. It is not meant to be all encompassing, but rather provides insight into the most pressing issues facing the USAF in the post-Cold War era. Binding the strategy together is a redefinition of Global Vigilance, Global Reach, and Global Power; not in a weapons systems-specific context, but rather as a framework through which the USAF serves the nation. An underlying assumption is that while major combat operations, also known as conventional campaigns, are the most dangerous to America's national interest, the conduct of irregular warfare (IW) is the most likely. Accordingly, beyond recasting Global Vigilance, Reach, and Power, the study focuses on how the USAF can contribute to winning the current fight, while simultaneously maintaining the technological superiority necessary for prevailing in the future fight. In relation to the current fight, this study discusses winning IW, air mobility, air-ground integration and the planning cycle, intelligence reform, the transformation of airpower thought-including integration of unmanned aerial systems, the Total Force, and air base disaster contingency planning. In maintaining USAF technological superiority, the study focuses on acquisition reform, nuclear surety and deterrence, intercontinental ballistic missile (ICBM) and bomber modernization, space defense in depth, and operationally responsive space and cyberspace operations.

In November 2009, Gen Norton A. Schwartz, the Air Force chief of staff, tasked the Air Force Research Institute (AFRI) to answer the following question: What critical capabilities-implemented by the combatant commanders-will the nation require of the Air Force by 2030? Preparing for the challenges of a geostrategic environment 20 years in the future required a multiphase research plan. First, the AFRI team identified the nation's vital interests: commerce; secure energy supplies; freedom of action at sea, in space, in cyberspace, and in the skies; nuclear deterrence; and regional stability. The team analyzed four future world scenarios-a peer competitor, resurgent power, failed state, and jihadist insurgency-in relation to the nation's vital interests and the 12 Air Force core functions. The resulting analysis led to a synthesis of the core functions into five critical capabilities designed to meet the Air Force's strategic challenges in 2030: power projection; freedom of action in air, space, and cyberspace; global situational awareness; air diplomacy; and military support to civil authorities (MSCA). For several reasons, the service's ability to project power will be severely tested over the next generation. Because many current systems are reaching the end of their service lives, the Air Force must recapitalize these assets to maintain its ability to project power. Domestic and international pressures may dictate that American forces operate from fewer overseas locations-magnifying the importance of power projection. Further, technically advanced adversaries will challenge the United States in space and cyberspace, making power projection a necessity to protect national interests. To be effective in the increased threat environment of 2030, the Air Force must integrate air, space, and cyber capabilities-focusing on strategic effects. Integrating these capabilities across domains will become a key enabler and force multiplier over the coming decades. Domain superiority is not guaranteed in the future. As the technological gap between the United States and other actors narrows, adversaries will contest the Air Force's preeminence in air, space, and cyberspace. Today's freedom of action in space and cyberspace will encounter direct threats. Therefore, to gain superiority in either domain, the Air Force must develop resiliency in both space and cyber systems and thereby create an effective deterrent. Reducing the incentive for attack by negating gain is imperative. Further, creating systems that can continue effective operations following attack will be essential in the increasingly complex battlespace of 2030. Air diplomacy-the employment of power through capabilities such as humanitarian assistance, deterrence, and power projection-takes advantage of airpower's inherent soft-power capabilities. Today the service often conducts these missions through ad hoc means. However, the Air Force must develop a deliberate and comprehensive air diplomacy strategy to improve the effectiveness of these efforts; moreover, it should address specific ends, ways, and means of supporting the combatant commander's theater plan. The service also must commit to organizing, training, and equipping for the air diplomacy mission to meet combatant commanders' requirements. In coming years the nation will look to the Air Force to provide power projection; freedom of action in air, space, and cyber; global situational awareness; air diplomacy; and MSCA to meet the strategic challenges Americans will soon face. Maintaining these capabilities will require continuous attention and investment, or they will erode. The United States is in danger of being overtaken by emerging adversaries in a number of areas the nation has long taken for granted. Focusing on these five capabilities will assure the Air Force contribution to national security as the nation moves toward 2030.