The speculation of external terrorism is of course not the issue. That IMO is wht they are discounting.
rintense, let's hope political correctness doesn't rear it's ugly head and they investigate every possibility.
It is premature to hear the reports that say there is no indication of terrorism. From what little that is known now, there is also no indication it is not terrorism, ie they know almost nothing at this time.
It always bothers me when they prematurely rule things in or out even before they have any information one way or another.
The process they were going through at the time was very delicate manauvering considering how exact the process of re-entry is and is probably the most dangerous part of the return, and they routinely loose radio contact during this particual time. The concern began when contact did not return.
This going to be a long process IMO. Speculation is pretty all over the place at this time.