Cruise missiles are guided missiles that fly within the Earth's atmosphere and remain under aerodynamic control throughout their flight. North Korea has been developing nuclear weapons and missile technology, leading to international tensions and sanctions. Kim Jong Un has emphasized the importance of nuclear deterrence. - North Korea conducted strategic cruise missile tests to showcase its nuclear counter-attack capabilities. - Kim Jong Un supervised the missile launch and emphasized the need for full nuclear readiness. - The missile launch occurred over the sea off the west coast of the Korean peninsula. - North Korea stated the tests were a response to escalating US-led hostilities since the start of the Trump administration. - Kim Jong Un believes nuclear attack capability is essential for the country's defense.