North Korean hypersonic missiles aimed at the South in the event of conflict should be taken out with a “preemptive strike,” presidential candidate Yoon Suk-yeol said Tuesday, hours after North Korea conducted its second missile test of the new year.

Yoon’s remarks were based on a hypothetical combat scenario following the DPRK’s alleged hypersonic missile test last week. Tuesday morning’s missile also reached hypersonic speeds of Mach 10 and demonstrated “advancement” over last week’s test, according to the ROK Joint Chiefs of Staff.