Pseudobulbar affect (PBA), emotional lability, labile affect, or emotional incontinence refers to a neurologic disorder characterized by involuntary crying or uncontrollable episodes of crying and/or laughing, or other emotional displays. PBA occurs secondary to a neurologic disease or brain injury.
Or he’s just a wuss.
In Bohner's case it's a mental disorder commonly known as traitorism, and it's most common symptom is collaboration with the enemy.