Complex sentence: According to Carter failure to keep up with Russia will leave the UK exposed, particularly to unorthodox, hybrid warfare o. One of the biggest threats posed is from cyber-attacks that target both the military and civilian life.
Split into simpler sentences: According to Carter failure to keep up with Russia will leave the UK exposed, particularly to unorthodox, hybrid warfare. He also said that one of the biggest threats posed is from cyber-attacks that target both military and civilian life.