let s start with the war in ukraine. russia has launched a fresh wave of missile strikes against ukraine speaking to the bbc, the ukrainian president volodymyr zelensky has ruled out conceding any territory to russia in a potential peace deal. our world affairs editor, john simpson, reports from kyiv. with the anniversary of the russian invasion coming close, president zelensky is showing signs of increasing confidence. he s been visiting several of his main backers in britain and other nato countries, and the promises of weapons and support that he s received have clearly buoyed him up. when i met him today, he was defiant and seemed more than usually sure of his position. i asked what he felt about the threat that vladimir putin might strike at ukraine through neighbouring belarus, and he dismissed it out of hand. it will be a big mistake for him and for belarus. it will be a historical mistake. but if belarussia does involve itself, can you survive? we will fight. we wil
see that level of sea level rise. to understand that, you need to understand that, you need to understand exactly the critical processes that are occurring below the sea. we can only do that by going in and taking measurements. [30 going in and taking measurements. do we not know enough already. do we know that actually things are getting pretty dicey out there and we need to do something about it? well we do and it is very clear that if we want to of worked avert the worst of the impacts of climate change we need to take change today. global emissions of carbon dioxide and other greenhouse gases are continuing to increase. for my point of view climate scientists working on this, for decades it is incredibly frustrating that we know it technologies exist to move to a cleaner, greenerfuture it technologies exist to move to a cleaner, greener future and they are just not being implemented at the scale and pace that is required around the world. there is another key point about this as