Tuesday morning’s missile test, which was conducted on the orders of the country’s leader, Kim Jong Un, reached a height of 2,802 kilometers (1,741 miles), according to state broadcaster Korea Central Television (KCTV).

That’s the highest altitude ever reached by a North Korean missile, and puts the US on notice that Pyongyang could potentially hit the US mainland.

The regime appears to have timed the launch for maximum political effect, giving the order to fire on the eve of the July 4 holiday, just days after US President Donald Trump spoke with Japanese and Chinese leaders about the North Korea threat and before this week’s G20 meeting.