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).
1 Esophageal ring. A thin area of narrowing in the lower esophagus can intermittently cause difficulty swallowing solid foods.  Gastroesophageal reflux disease (GERD). Damage to esophageal tissues from stomach acid backing up into your esophagus can lead to spasm or scarring and narrowing of your lower esophagus.