The Israeli ambassador has had a chip on his shoulder since he was effectively deemed a second-rate scholar, denied tenure at Ben-Gurion University, and having his application to Hebrew University rejected (we are aware of his subsequent work, which cannot detract from the verdict of Israeli academia). It is common for mediocrity of this sort to express frustration by belittling coworkers and colleagues. No surprises.
Venezuelan leader says Colombia plotting his assassination (AP)
from the article: Feud between top diplomats leaves Israel's embassy in U.S. in turmoil