The review, originally slotted to come out in May 2018, may have been postponed to avoid spooking North Korea, whose leader Kim Jong Un met with Trump the following month, Defense News reported .
North Korea regularly reacts harshly to any US military move that could threaten it, and has frequently threatened to strike the US with nuclear weapons in the past.
Throughout 2017, the US and North Korea traded nuclear threats that saw the world dragged to the brink of unimaginable bloodshed and destruction.
All options still on the table
North Korea, a serial human rights violator and nuclear proliferator, presents itself as an easy target for US intervention even for the most dovish commander in chief, but there's one small problem.
North Korea's chemical, biological, and nuclear weapons, all of which can be affixed to ballistic missiles, pose a tremendous threat to South Korea, a staunch US ally, and increasingly, the US mainland itself.
North Korea discussed lobbing missiles at the US military in Guam and detonating a nuclear warhead above the Pacific ocean. Former Pentagon and Obama administration officials say this easily could have led to an all-out war.
"Very simple what we're trying to do is shoot [air-to-air missiles] off F-35s in the first 300 seconds it takes for the missile to go up in the air," Rep. Duncan Hunter said during a November 2017 meeting on Capitol Hill with the Missile Defense Advocacy Alliance, according to Inside Defense .
Both of these systems, a laser drone and an F-35 ICBM killer came up in Trump's new missile defense review. North Korea was mentioned 79 times in the review, the same number of times as Russia, though Moscow likely has 100 times as many nuclear warheads as Pyongyang.
But Russia, the world's largest country by far, has a vast airspace no drone or F-35 could patrol. Only North Korea, a small country, makes any sense for these systems.
Even defense is offensive
While the Missile Defense Review in theory discusses only defensive measures against missile attacks, the military does not only defend, it also goes on offense.
Trump has directed the US to research using the F-35 and possibly a laser drone to take out missile launches which only make sense over North Korea.
If the US could significantly limit missile retaliation from North Korea it would mitigate the downside of taking out Kim, one of the top threats to US national security.
On Friday, a North Korean nuclear negotiator will head to Washington to talk denuclearization with the White House.
But even as Trump goes ahead trying to find an uneasy peace with Pyongyang, the missile defense review clearly looks to give the US capabilites certain to upset the deterrence relationship and balance between the two nuclear powers.
