Keir Starmer delivers his speech during a visit to the BAE Systems' Govan facility in Glasgow.Keir Starmer has put the UK on a war footing as he warned of “growing Russian aggression” at sea, in the air and cyberspace.The prime minister said he wanted to deliver “peace through strength” as he launched the government’s strategic defence review (SDR).But a row broke out over how Labour plans to pay for its plans, which include building up to 12 new attack submarines, thousands of long-range missiles, six munitions factories and billions of pounds worth of nuclear warheads.Starmer refused to echo defence secretary John Healey in confirming that defence spending will increase to 3% of gross domestic product (GDP) by 2034.In a major speech in Glasgow, the PM said: “We are moving to warfighting readiness as the central purpose of our armed forces.“When we are being directly threatened by states with advanced military forces, the most effective way to deter them is to be ready