More than three years into Russia's full-scale invasion, Ukrainians across the country retreat each night to bomb shelters and metro stations in a nightly ritual.

Russia fired a record number of drones at Ukraine in July, an AFP analysis showed Friday, intensifying its deadly bombardment of the country despite US pressure to stop the war.Russian attacks have killed hundreds of Ukrainian civilians since June.

Authorities in Ukraine said a Russian drone and missile attack on the capital, Kyiv, killed at least 13 people, including a 6-year-old boy

President Donald Trump issued a rare threat of nuclear escalation on Friday, saying he had ordered two nuclear submarines to be strategically positioned near Russia in response to what he said were aggressive remarks by Dmitry Medvedev,

By Phil Stewart, Jonathan Landay and Ryan Patrick Jones WASHINGTON (Reuters) -U.S. President Donald Trump on Friday said he had ordered two nuclear submarines to be positioned in "the appropriate regions" in response to remarks from former Russian President Dmitry Medvedev about the risk of war between the nuclear-armed adversaries.