Isomerism is the phenomenon whereby certain compounds, with the same molecular formula, exist in different forms owing to their different organisations of atoms. The concept of isomerism illustrates the fundamental importance of molecular structure and shape in organic chemistry.
By signing the nuclear deal, Iran has given up that nuclear umbrella for as long as two decades and made the case for the United States to further strengthen the conventional military capacities of Israel and the GCC.
Meanwhile, under the terms of the nuclear deal, Iran would have to wait another five years for a U.N.-imposed arms embargo to be lifted. The deal does relieve economic pressure on Iran, but not enough to change the balance of power in the region.