This past week has seen the most significant escalation in hostilities Ukraine has witnessed since Russia’s full-scale invasion and marks a new chapter in the nearly three-year war.

President Vladimir Putin said on Thursday that the Ukraine war was escalating towards a global conflict after the United States and Britain allowed Ukraine to hit Russia with their weapons, and warned the West that Moscow could strike back.

In the week that saw the conflict pass its 1000th day, Western powers substantially boosted Ukraine's military arsenal - and the Kremlin made its loudest threats yet of a nuclear strike. Here is how the last week played out - and what it means.