A temporary truce between Russia and Ukraine entered into force on Saturday, with Kyiv warning it would respond “immediately” if Russia violated it. Russian President Vladimir Putin ordered the ceasefire on Thursday to coincide with Orthodox Easter, more than a week after Ukrainian President Volodymyr Zelensky first made the proposal. Both sides have agreed to observe it. The ceasefire is due to last for 32 hours, from 4.00pm on Saturday until the end of the day on Sunday, according to the...