The Ramchal writes in the sefer Kin'at Hashem Tz'va'ot the following short statement:
For the nations themselves are on the outside, and they attach themselves to Israel through the Erev Rav...
From this we see why the Erev Rav is the Center of the Klipah. The Klipah attaches itself to Am Yisrael. The Klipah feeds on Kedushah. The conduit for the Klipah of the Left and Right to attach to Am Yisrael is through the Erev Rav. When the Erev Rav no longer provides this link to Kedushah, the conflict begins.
This is the reality we live in. The State of Israel is considered a close ally of the USA. This stems from their common source on the Left. The leadership here in Eretz Yisrael enables both the sons of Esav and Yishmael to have a say over the affairs of Am Yisrael, where no such say is due to them. The leadership in Eretz Yisrael, even by partial obedience, enables Esav and Yishmael to maintain their profitable relationship. When will this situation end? It will end when the time of the Erev Rav of the Left ends. That is when the goals of Moshiach ben Yosef are no longer considered to be a threat to national security.
From that point, it is no longer the partnership of the Internal and External Klipah of the Left, partners against Moshiach ben Yosef.
It is the side of Kedushah against the Klipah, Moshiach ben Yosef will return the "war to the gates."
That is the conflict.