It is the "backbone of military communications in Ukraine" that provides vital high-speed internet to forces across the country.

A wide range of significant events have occurred in the past 24 hours, including developments in science, health, sports, politics, business, technology, and entertainment.

More than 12,000 people filled a major venue in the city to hear the former US president's take on the challenges the world is facing. .

Russia reports a Ukrainian strike on an oil refinery on Thursday, after Ukraine's president says a pause is over following fresh Russian attacks.