Now North Korea experts believe supreme leader Kim Jong-un may have fled his homeland over fears of an invasion, missile strike or assassination attempt.
The airstrikes, announced shortly after Trump and Chinese President Xi Jinping wrapped up dinner at a two-day summit in Florida last week, were retaliation against Syrian President Bashar Assad for a chemical weapons attack against civilians caught up in his country's long civil war.
North Korea conducted another ballistic missile test on April 5, shortly before Xi and Trump met. Kim has said previously his regime is close to developing a ballistic missile capable of carrying a nuclear warhead to the continental U.S.
Secretary of State Rex Tillerson says the USA missile strikes against a Syrian air base in retaliation for a chemical weapon attack carries a message for any nation operating outside of worldwide norms.
The comments were made by a Foreign Ministry official and carried Sunday by North Korea's state-run Korean Central News Agency.
Not such a big provocation for North Korea as one of the other options, is to just assassinate Kim Jong-un and other North Korean officials outright, with former NATO commander James Stavridis saying that the killings are "always a tempting strategy".
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Along with its rapidly advancing nuclear and long-range missile capabilities, the North has its artillery and short-range missiles trained on Seoul, the capital of US ally South Korea and a city of more than 10 million people. -South Korean war games, which are held annually and are now underway, have raised tensions on the Korean Peninsula to the brink of war.
You may recall the recent response to the USA and South Korea conducting drills with the USS Carl Vinson, a Navy supercarrier with nuclear capability, being involved. The United States has spoken enough about North Korea.
Like his predecessors in the White House, Trump wants China to do more to influence the North's behavior, but has gone further than others in threatening to go it alone if Beijing fails to step up to the plate.
The statement said that North Korea, which regards Syria as an ally, was not surprised that this U.S. military attack was a "warning to us" and that it was another example that "we have to defend ourselves against imperialist aggressions".
Washington denies it has any intention of invading the North. Four-star Gen. Jack Keane, who told Fox News that the US was "rapidly and dangerously heading towards the reality that the military option is the only one left when it comes to getting North Korea to denuclearize and not weaponized [intercontinental ballistic missiles]".