Madara strikes. A challenge to Itachi.

Madara leaned on the cold stone wall that the Akatsuki hideout was made and was entirely focused on sensing any presences around. He was with his Tobi mask and his usual black attire while on top of it was Akatsuki's cloak.
He felt the Akatsuki was falling apart and a mutiny was infront of him so he had to take care of one pest and regain at least partially his former power.

The Uchiha was prepared fully to face Itachi Uchiha and he was going to slaughter him in cold blood for sake of his goal of conquering the world with the "Moon Eye Plan".
Madara had to get rid of Itachi first as he possessed the greatest danger so far and was a key for Madara to regain his previous powers.
He awaited patiently for Itachi to show up while he formulated his plan.