Why is it forbidden to ignore any enemy of Israel?

Remember to eradicate Amalek: Fighting our enemy of enemies.

Rabbi Pinchas Winston,

Hezbollah Chief Hassan Nasrallah
Hezbollah Chief Hassan Nasrallah
Al Manar TV

Many people do not know or care about who Amalek is or what he represents.

They may not realize that Amalek, first mentioned in the Torah, is God’s eternal enemy, and therefore, the nemesis of the Jewish people.

More importantly, they have little idea of how Amalek affects them today, and how dangerous he is even at this time. Amalek existed then, and Amalek still exists now, and ignoring him only empowers him.