The DPRK's test-fire of ballistic rocket is an exercise of the right to self-defence to cope with the reckless aggression moves of the U.S. chiefly responsible for the escalated tension on the Korean peninsula.

Some countries' criticism of this is a wanton violation of the sovereignty and interference in internal affairs of the DPRK.

The UN Security Council took issue only with the DPRK's bolstering up its military capability for self-defence, in disregard of the test-fire of ICBM by the U.S. This is an unpardonable discrimination and the height of double-standard.

The more the U.S. and its vassal forces pull up the DPRK over its step for bolstering its nuclear forces, the further the DPRK will diversify and develop the nuclear force at a high level.