Russian and Ukrainian forces exchanged artillery fire at the front line in Ukraine on Friday, even after Moscow said it had ordered its troops to stop shooting for a unilateral truce that was firmly rejected by Kyiv.Ukraine has said it has no intention to stop fighting, rejecting the purported truce as a stunt by Moscow to buy time to reinforce troops that have taken heavy losses this week.Putin attended a service by himself inside a Kremlin cathedral rather than joining other worshippers in a public celebration.Ukrainian President Volodymyr Zelenskiy, who pleaded for the Bradleys in Washington last month on his first trip abroad since the war began, said on Friday they were "exactly what is needed".One rescue worker was killed and four others injured when Russian forces shelled a fire department in the southern Ukrainian city of Kherson before the deadline early on Friday, the regional governor said."