A Romanian national pleaded guilty on Monday to charges related to his role in a “swatting” ring that targeted dozens of public officials, including a former US president. Going by the aliases “Plank,” “Jonah” and “Cypher,” 26-year-old Thomasz Szabo took part in a years-long conspiracy to place bogus 911 calls, claiming emergencies were taking place at the homes of top government officials, and make bomb threats against government buildings and houses of worship, according to Justice Department. Szabo and a co-conspirator, 21-year-old Serbian national Nemanja Radovanovic, allegedly targeted about 100 people, including members of Congress, governors, cabinet-level executive branch officials...