Russian missiles strike Lviv

Russia fired missiles at an airport near Lviv on Friday, a city where hundreds of thousands found refuge far from Ukraine's battlefields, as Moscow tries to regain the initiative in its stalled campaign against Ukraine.

U.S. President Joe Biden was due to talk with Chinese president Xi Jinping later on Friday, in an attempt to starve Russia's war machine by isolating Moscow from the one big power that has yet to condemn its assault.

More than three weeks since President Vladimir Putin launched an invasion to subdue what he calls an artificial state undeserving of nationhood, Ukraine's elected government is still standing and Russian forces have not captured a single big city.

Russian troops have taken heavy losses while blasting residential areas to rubble, sending more than 3 million refugees fleeing. Moscow denies it is targeting civilians in what it calls a "special operation" to disarm its neighbour.