President Obama denies North Korea can make a nuclear strike against the U.S. or its allies, claiming they cannot make a nuclear weapon miniaturized (small and lightweight enough) for missile delivery. The miniaturization myth never made sense technically and is contradicted by the defense community.
Causes of Esophageal Strictures. Esophagitis is the inflammation of the lining of the esophagus which often leads to swelling. Some of the common causes include chronic acid reflux (GERD / gastroesophageal reflux disease), infections or autoimmune causes (eosinophilic esophagitis).
Esophagogastric ring; Schatzki's ring. A lower esophageal ring is a birth defect of the esophagus that occurs in a small number of people. It causes narrowing of the lower esophagus. Narrowing of the esophagus may also be caused by: Injury. Tumors.