User blog comment:DarkSkullPirates/Wano Theories/@comment-4899461-20130125055355

FYI, Momonosuke wasn't kidnapped, he chose to get on that boat, seemingly to go after Doflamingo or something to that effect.

To me it seems likely that Dressrosa (which was never stated to be an island, only a location/possibly a mansion) is located in Wano. If the WG never has any contact with Wano, it makes perfect sense for DD to headquarter his underground operations there. As for why the people of Wano would allow DD to stay, I think it's more that DD is too powerful for them to kick out ) He probably has some degree of control over the island, similar to Arlong and Nami's home island (evidenced by the attitudes of Kinemon/Momo, it stands to reason that a pirate has wronged them in the past). It would appear that DD also has Kaido on his side, since DD supplies him with Smiles for his army. If the WG doesn't want to fight a Yonko. Dealing with a Shicibukai is one thing, but dealing with a Warlord and a Yonko would be too much, even for a country powerful enough to hold off the government.

Sidenote: If Wano isn't tied to the WG, I expect to hear some crazy stuff about the Void Century there.