Classical unified field theories a survey of classical relativistic field theories of gravitation that have been motivated by theoretical concerns other than unification, see Classical theories of gravitation. For a survey of current work toward creating a quantum theory of gravitation, see quantum gravity. The early attempts at creating a unified field theory began with the Riemannian geometry of general relativity, and attempted to incorporate electromagnetic fields into a more general geometry, since ordinary Riemannian geometry seemed incapable of expressing the properties of the electromagnetic field. Einstein was not alone in his attempts to unify electromagnetism and gravity; a large number of mathematicians and
Operation Unified Resolve Peshawar. Anti-coalition forces, led by former Afghan prime minister Gulbuddin Hekmatyar, have attacked coalition forces with their usual retinue of rockets, mines, and bobby traps. Hekmatyar has been organizing alliances between the remaining anti-coalition forces in the area and increasing their coordination. In addition to hunting the Taliban and al-Qaeda fighters, Operation Unified Resolve also distributes humanitarian assistance to the Afghan people in the nearby valleys. Operation Unified Resolve Operation Unified Resolve is an air and ground operation to flush out and trap al-Qaeda fighters hiding in the eastern Afghanistan provinces. Launched on 23 June 2003, Operation Unified Resolve is