It is a figure of speech guys and a known play of words. means a very troublesome thing or person. At the same time, if something is troublesome (like an SSBN is to an enemy), is even more potent (like two).
Re-posting a lost image.
(1476 × 1080)
So, how many Type 093 SSNs China currently has?
enough nukes in there to take out a small countryDouble trouble.
(2048 × 1448)
enough nukes in there to take out a small country
enough nukes in there to take out a small country
Is the JL-2 not capable of MIRV? A single 1MT warhead is 1000KT which is roughly half the max yield configuration of Trident II. Trident II can carry up to 8 smaller yield warheads.