Classical unified field theories to isospin rather than electromagnetism; this is related to a discrete (or ""internal"") symmetry known to Einstein as "displacement field duality". Einstein became increasingly isolated in his research on a generalized theory of gravitation, and most physicists consider his attempts ultimately unsuccessful. In particular, his pursuit of a unification of the fundamental forces ignored developments in quantum physics (and vice versa), most notably the discovery of the strong nuclear force and weak nuclear force. Inspired by Einstein's approach to a unified field theory and Eddington's idea of the affine connection as the sole basis for differential geometric structure for space-time,
Unified Command of the area east of the canal (Egypt) first changed the force structure of the army by creating a "unified command" to oversee counterterrorism operations east of the Suez Canal. The second promoted Osama Askar, commander of the Third Field Army, both in rank and in title: he is now a lieutenant general—one of a handful in the armed forces—and in charge of the "unified command." He will also retain his seat on the SCAF. Askar’s former deputy, Muhammad Abdullah, has been appointed commander, and Tarek Anwar Helal the chief of staff, of the Third Field Army. Nasr 13 was the first manoeuvre of its type since the