Despite the changes in warfare, Russian forces retain the ascendancy and are making slow but steady advances in the east and north of Ukraine. Russia has also caught up in UAV technology after falling behind early in the war, according to military analysts, and like its enemy is churning out drones domestically at a rate of millions a year.

Two Russian agents were killed by Ukrainian security forces Sunday following reports that the Russian operatives assassinated Ukrainian Colonel Ivan Voronych.

Ukraine’s Security Service said Sunday they had killed Russian special service agents suspected of gunning down a fellow officer in Kyiv earlier this week, saying it believed Russia’s Federal Security Service was responsible.

Ukraine's security agency says it has killed Russian agents suspected of assassinating a senior officer in Kyiv.

The reaction to President Donald Trump’s latest ultimatum to Russian President Vladimir Putin might best be described as dismissive scorn. “As so often with Trump, the teaser was more interesting than the main show,

Ukraine’s military commander in charge of the country’s drone warfare program urged the US and NATO countries alike on Wednesday to learn from Kyiv’s use of the technology on the battlefield so in the future there are not “hard questions from your children [about] when [their] father will come back.

Donald Trump has said Volodymyr Zelensky should not target Moscow after reportedly privately discussing strikes on the Russian capital with the Ukrainian leader."No, he shouldn't target Moscow," Mr Trump told reporters yesterday on the South Lawn of the White House when asked if Mr Zelensky should attack the Russian capital.