Sulu nodded. He knew that all this was important, that it was all necessary, and he could tell that Ianto was trying to sort out his thoughts even as he spoke. He could understand the idea of what Ianto was describing, as well; the idea of two hostile alien races appearing in one building, in one universe... he knew that however this went, it wouldn't end well. It wouldn't end happily and it wouldn't end with everyone Ianto knew getting out alive. That much was certain. And he had heard Lisa, so he could see where this might be going.

"And they didn't exactly want to talk peace treaties and First Contact relations, I take it," Sulu said, ducking his head to rest against Ianto's shoulder, trying to reassure him as subtly as he could.