| FILE In this Friday April 7 2017 file image provided by the US Navy the guided missile destroyer USS Porter DDG 78 launches a tomahawk land attack missile in the Mediterranean Sea as the United States blasted a Syrian air base with a barrage of cruise missiles in fiery retaliation for a gruesome chemical weapons attack against civilians earlier in the week North Korea has vowed to bolster its defenses to protect itself against airstrikes like the ones President Donald Trump ordered against an air base in Syria The North called the airstrikes absolutely unpardonable and said it proves that its nuclear weapons are justified to protect the country against Washington | MR Online's "evermore reckless moves for a war." (Mass Communication Specialist 3rd Class Ford Williams/U.S. Navy via AP, File)