Reply to post: "should be able to keep their crews alive for 210 days if disaster strikes"

"should be able to keep their crews alive for 210 days if disaster strikes"

No, this is wrong. The capsules can stay docked 210 days (7 months) to ISS w/o an issue, ready to undock in an emergency. Soyuz can only do 180 days (6 months) at the moment.