The US military has ordered a navy strike group to move towards the Korean peninsula, amid growing concerns about North Korea's missile programme. <br/><br/>US Pacific Command described the deployment, now heading towards the western Pacific, as a prudent measure to maintain readiness in the region. <br/><br/>President Trump has said the US is prepared to act alone to deal with the nuclear threat from North Korea. The strike group comprises the Nimitz-class aircraft carrier USS Carl Vinson, two guided-missile destroyers and a guided-missile cruiser.