[G Larry]

UDMH isn’t any kind of breakthrough, as we used it in our Titan II ICBMs in the 60’s.

It’s the engine technology that should be of concern.

[pfflier]

Agreed. The advantage of UDMH and MMH is either is hypergolic in the presence of nitrogen tetroxide or nitric acid. This technology was known and commonly used since the 1960s.

Besides rocket fuel, the F-16 and space shuttle, for example, use MMH for their APUs.

Seems the media reporting this is decades behind the technological reality.

[Titus-Maximus]

Titan II. Damascus incident, 9 mt bomb exploded from fuel leak caused by a dropped wrench. Warhead stayed intact.

75 ton door to the silo flew off like a Frisbee cutting down trees.

[kosciusko51]

Look at:

https://en.wikipedia.org/wiki/Hwasong-10

And then check out:

https://en.wikipedia.org/wiki/R-27_Zyb