Okay, this has been discussed before, but it was before I was here 
At the end of The Jem Hadar, Eris apparently transported away, but O'Brien reported no other ships within range. The Dominion and the Federation both knew about the other, and there had been a little bit of traffic from some Gamma Quadrant races to the Alpha Quadrant, regarding Quark's business venture, but no Dominion traffic what we're aware of.
Was Eris just transporting into empty space so she'd die without telling Sisko anything? Could the Dominion's ultra-long-range transporters work through the wormhole?
I say:
No, she would not commit suicide. Not because of being overly fond of her own life or unwilling to die for the benefit of the Founders, but because observing the Federation and reporting back to the Dominion was part of her mission.
No, transporters would not work through the wormhole. If they did, the Dominion would have used them to resupply their foothold in the Alpha Quadrant later.
O'Brien scanned for ships, but he scanned for them within what he considered to be normal transporter range, not the ultra-long-range models the Dominion had.
So, I say they had some sort of stealth or cloaking technology that wasn't very good yet. They didn't use it on their warships because those were high-powered ships and big, and the cloaks they had would interfere with their performance too much. But they did have a few ships specially built to be cloaked. They are no larger than a runabout, maybe even smaller, they have small engines and weak or no weapons. The Dominion really has them just for intelligence missions - like Eris. They tucked one or two of those cloaked ships in close to one of the civilian ships that their subject races were taking through the wormhole so they wouldn't be noticed passing through the wormhole. Once in the Alpha Quadrant, they separated and made their stealthy way off slowly to some nebula and waited for something important to do - like receive Eris when she activated her transporter. Or take a Founder on a mission to impersonate someone important in the Alpha Quadrant. Later on, the Founder who transported away from the conference on Earth where the bomb went off probably used another of the same type of ship, or maybe even the same one.
Thoughts?

At the end of The Jem Hadar, Eris apparently transported away, but O'Brien reported no other ships within range. The Dominion and the Federation both knew about the other, and there had been a little bit of traffic from some Gamma Quadrant races to the Alpha Quadrant, regarding Quark's business venture, but no Dominion traffic what we're aware of.
Was Eris just transporting into empty space so she'd die without telling Sisko anything? Could the Dominion's ultra-long-range transporters work through the wormhole?
I say:
No, she would not commit suicide. Not because of being overly fond of her own life or unwilling to die for the benefit of the Founders, but because observing the Federation and reporting back to the Dominion was part of her mission.
No, transporters would not work through the wormhole. If they did, the Dominion would have used them to resupply their foothold in the Alpha Quadrant later.
O'Brien scanned for ships, but he scanned for them within what he considered to be normal transporter range, not the ultra-long-range models the Dominion had.
So, I say they had some sort of stealth or cloaking technology that wasn't very good yet. They didn't use it on their warships because those were high-powered ships and big, and the cloaks they had would interfere with their performance too much. But they did have a few ships specially built to be cloaked. They are no larger than a runabout, maybe even smaller, they have small engines and weak or no weapons. The Dominion really has them just for intelligence missions - like Eris. They tucked one or two of those cloaked ships in close to one of the civilian ships that their subject races were taking through the wormhole so they wouldn't be noticed passing through the wormhole. Once in the Alpha Quadrant, they separated and made their stealthy way off slowly to some nebula and waited for something important to do - like receive Eris when she activated her transporter. Or take a Founder on a mission to impersonate someone important in the Alpha Quadrant. Later on, the Founder who transported away from the conference on Earth where the bomb went off probably used another of the same type of ship, or maybe even the same one.
Thoughts?