James Menendez

Mr. Zelensky was scheduled to travel to Saudi Arabia after visiting his Turkish counterpart, President Erdogan, but he said he had now postponed the trip so not to add legitimacy to the early negotiations to which he was not invited.

Tennis has seen some high-profile doping cases over the past six months or so. The leading female player, Iga Sviontek, accepted a one-month suspension in November after testing positive for a banned substance when she was the world number one. What's the feeling then within the sport about these very high-profile cases? Is it damaging for the sport?

Tennis has seen some high-profile doping cases over the past six months or so. The leading female player, Iga Sviontek, accepted a one-month suspension in November after testing positive for a banned substance when she was the world number one. What's the feeling then within the sport about these very high-profile cases? Is it damaging for the sport?

Yes, the former Wimbledon finalist Nick Kyrgios called it a sad day for tennis. The former British number one Tim Henman said the ban was too convenient and believes it will leave tennis fans with a pretty sour taste. So there is that feeling then that maybe the top players are treated a little differently, Charlie.

Yes, the former Wimbledon finalist Nick Kyrgios called it a sad day for tennis. The former British number one Tim Henman said the ban was too convenient and believes it will leave tennis fans with a pretty sour taste. So there is that feeling then that maybe the top players are treated a little differently, Charlie.

President Zelensky is facing one of his steepest political challenges in taking on a White House which is warming to Russia. His message? While all sides are looking to win, Ukraine deserves to. The pace of these ceasefire politics is blistering, but no less consequential for a country which doesn't want three years of sacrifice to be for nothing.

President Zelensky is facing one of his steepest political challenges in taking on a White House which is warming to Russia. His message? While all sides are looking to win, Ukraine deserves to. The pace of these ceasefire politics is blistering, but no less consequential for a country which doesn't want three years of sacrifice to be for nothing.

In Kiev, and countless other cities, there is a desire for peace, but the terms are seen as just as important.

In Kiev, and countless other cities, there is a desire for peace, but the terms are seen as just as important.

President Zelensky has always said there can be no talks on Ukraine without Ukraine, but this week has been anything but, to the frustration of Alexei, a frontline soldier.

President Zelensky has always said there can be no talks on Ukraine without Ukraine, but this week has been anything but, to the frustration of Alexei, a frontline soldier.

The fact Ukraine didn't fall to Russia within days, as many expected, is a victory. But three years on, if Ukraine over-compromises and doesn't secure sufficient security guarantees, it could still lose.

The fact Ukraine didn't fall to Russia within days, as many expected, is a victory. But three years on, if Ukraine over-compromises and doesn't secure sufficient security guarantees, it could still lose.

And so the brain gets a signal that it's full, but what is the other message that it's sending out?

And so the brain gets a signal that it's full, but what is the other message that it's sending out?

And this message is via what? An opiate endorphin. I mean, I think people know what endorphins are because they make you feel very good indeed. It's a feeling of reward, is it?

And this message is via what? An opiate endorphin. I mean, I think people know what endorphins are because they make you feel very good indeed. It's a feeling of reward, is it?

And it is only sugar, isn't it? It's not other types of food that this happens with?

And it is only sugar, isn't it? It's not other types of food that this happens with?

Of course, these days, sugar is everywhere. So could this discovery be used to try and control our sugar intake? Is there a way of inhibiting these brain messages?