At least 15 killed as Russia rains rockets on Ukraine’s Kharkiv

Russian forces pounded Ukraine’s second largest city Kharkiv and surrounding countryside with rockets, killing at least 15 people, in what Kyiv called a bid to force it to pull resources from the main battlefield to protect civilians from attack.

Inside Russia, a fire tore through an oil refinery just eight kilometres from the Ukrainian border. Russia’s TASS news agency quoted a local official as saying it had been struck by a drone.

The Russian strikes on Kharkiv, throughout…