Ukraine's President Volodymyr Zelensky has condemned Russia's "cynicism" for continuing to launch deadly attacks despite seeking a pause in hostilities. Russia, which is preparing to hold celebrations to mark victory in World War Two this weekend, said it would hold a ceasefire on 8 and 9 May and threatened a "massive missile strike" on central Kyiv if Ukraine violated the truce. But Kyiv said it would observe an open-ended ceasefire from midnight on 6 May, and that Ukraine would act "