What were the perceived threats of Hitler and Mussolini?

The
overwhelming threat of a centralized authority figure that faced no internal check or limitation
was reality under the rule of Hitler and Mussolini.  Both leaders were quite
"efficient" in eliminating competition and opposition.  They also ensured that once
they obtained power, it was consolidated and no other force could emerge internally to
destabilize them.  This ended up representing an end that created the setting for overwhelming
threats and positions that caused challenge to all of those who opposed the growing threat that
both leaders separately constituted, and then jointly represented when they formed alliances
with one another.