While Ainsley and the person from the world union were in a stalemate because no one wanted to back down, they also didn't want to start a war rashly...
Zev, the Godfather, and even some elites from the Walter family, along with Evan Walter himself, the head of the family, had already embarkeonto the island, ready to do their own things.
The Walter family actually had a great mission, and the Godfather also wanted to use this chance to find his past enemies.
Even if his enemies might not be here or they might have passed away due to old age, the Godfather still had a glimmer of hope to get revenge.
Maybe the Godfather was lucky or what, but on that island, he actually met a few past enemies who were still alive but weak as hell because of their old age.
These people were all living fossils who survived to such an old age due to various treasures they had obtained when they were still young.