Nor should it. There are demonstrations backing Hamas/Palestine going on right now around the world....no one is saying don't go to London or Harvard University in Boston.
Apparently there is a law in the UK that allows a client to cancel in the event or port changes due to war...and Regent is informing TA's/Clients about new flights.
I provide specialty services to a very small group of people. A small part of this is booking some of them on Regent. I am also a Titanium client. I am not an employee nor do I speak for them in any capacity.
I would guess their first priority is getting everyone to Istanbul. If there is time and capacity, they might then address specific needs. Just a guess!
You will get more info later today or tomorrow - the entire Air Department has been working on this, and only this, since Sunday. Have a little patience...this is a massive job. I've booked millions of dollars with Regent and they always do the right thing in the end....although it is not always fast enough to satisfy every client.
Almost 100 people die every day in the USA due to being shot or being hit by a drunk driver. If you want assurances of safety you can always stay home on the couch. I know with 100% certainty that I am going to die, I would prefer to die doing something I enjoy rather than turning into a vegetable watching Netflix. Just my opinion...I get that people are scared and they have the right to be.