And out front next, we have breaking news, Kate Middleton revealing she has cancer, but leaving

major questions unanswered.

Our Richard Quest is on the ground at Buckingham Palace on what he is just learning.

Also breaking brand new video just into out front of the bloody terror attack in Russia.

Forty dead at this hour, well over 100 injured, gunmen storming a concert hall.

ISIS is claiming responsibility, and Russia says the gunmen are on the loose.

And more news just into out front are filmatically, reporting Trump is, quote,

scrambling and increasingly furious as the deadline to pay half a billion dollars is one business day away.

Inside the campaign, some tonight saying it would be good for Trump of his properties were seized.

Let's go Outfront.

And good evening and welcome to a special edition of Outfront.

I'm Aaron Burnett. And tonight, Kate Middleton has cancer. The shocking announcement from the Princess of Wales following more than three months of speculation surrounding her health and whereabouts. Now, Middleton was admitted to the hospital for abdominal surgery related to a still unspecified medical condition on January 16.

And then she disappeared from public view.

Now that eventually sparked the frenzy of rumors and conspiracy theories which were running rife.

But tonight, a frail-looking Kate chose to address the world by herself to the camera.

I wanted to take this opportunity to say thank you personally for all the wonderful messages of support and for your understanding whilst I've been recovering from surgery.

It has been an incredibly tough couple of months for our entire family, but I've had a fantastic

medical team who have taken great care of me for which I'm so grateful.

In January, I underwent major abdominal surgery in London, and at the time, it was thought

that my condition was non-cancerous.

The surgery was successful, however, tests after the operation found cancer had

been present. My medical team therefore advised that I should undergo a course of preventative chemotherapy

...