I would love to be wrong, but there seems to be a lot information to suggest otherwise. Whilst admittedly a lot of this information when viewed on its own may be nothing to worry about, collectively they seem pretty troubling:
Obviously there is the news in this thread for starters.
There was also news that 150,000 Chinese troops were massing on the North Korean border.
Link.
The numerous stories about US ships and submarines arriving in the area.
Link.
Donald Trump invites entire Senate to White House for North Korea briefing.
Link.
Mike Pence visited Seoul to discuss military options.
Link.
Trump's frequent talks with China regarding North Korea.
Link.
Also, regarding Trump:
He is quickly approaching the end of his first 100 days, with little to show for it.
There is the growing Russia scandal which Trump is desperate to distract people from.
Sally Yates and James Clapper are both testifying to the Senate Committee on the 8th May.
His polling is currently awful.
With the Syrian strikes, he has already shown he is willing to make decisions without approval from the senate.
Lastly, he has at numerous times alluded to his plans for North Korea often on Twitter, but notably during his press conference back in February.
Link.