Some questions...
1. Were they really part of the World Health Organization? Were they good/bad?
2. So they whole thing was a set up just so he'd be in contact with Sienna? Why did he even have to get in touch with her--he figured the whole thing out without her?
3. Who had the bag with the virus?
4. If Sienna hadn't gone to Istanbul, wouldn't those 2 Turkish guys set off the virus on their own?