 Businesses and services around the world are slowly recovering from the massive IT problems which paralysed them on Friday. The cybersecurity firm CrowdStrike, which triggered the problems with the faulty software update, had said it understands the gravity and impact of the failure. The US Republican presidential candidate Donald Trump says he's spoken on the phone to the Ukrainian president Volodymyr Zelensky. He vowed to end Ukraine's war with Russia if elected.