Tech giants hold huge sway in matters of war, life and death. That should concern us all | Keir Giles

Elon Musk's hindrance of a Ukraine attack via Starlink caused a row. But other firms have similar power, and need scrutiny

The revelations that Ukrainian naval operations were blocked by a lack of support from Elon Musk's Starlink system cast light on to his complex relationship with Russia and Ukraine.

But it is an area that deserves more light still, for Starlink's parent, SpaceX, is far from the only technology company playing a vital role in Ukraine's resistance against the Russian invasion. Household names such as Amazon, Google, Microsoft and others have also been essential to the defence of Ukraine.