In a war dominated by the unexpected, few imagined Ukraine’s fourth year at war would so firmly now question the security of all of Europe.

The U.S. is lobbying countries around the world to oppose a resolution brought forward at the U.N. General Assembly by Ukraine and European countries.

John Simpson, in discussion with the BBC's unparalleled range of experts across the world, analyses whether Russia’s war in Ukraine is nearing an endgame, examines the implications of the surge in support for the right in the German elections and looks at the huge increase in government surveillance under the Taliban in Afghanistan.