Amid mounting tensions with Russia and Iran over Ukraine and Israel, the UK military's readiness for “all-out war” is under doubt. A report by the Defence Committee claims Britain’s “increasingly overstretched” Armed Forces are not ready for a war with Russia. The report called for urgent reforms or the UK government “will never achieve warfighting or strategic readiness”. The report comes as the Royal Navy announced that its most powerful warship, HMS Queen Elizabeth, suffered a “mechanical fault” just hours before it was due to set sail to join NATO’s ‘Steadfast Defender’ exercise. The report has caused concerns amid an intensifying debate over a possible world war and whether Britain would be ready to fight.