US President Donald Trump on Thursday called off his planned June summit with Kim Jong Un, blaming “tremendous anger” and “hostility” from the North Korean regime and warning Pyongyang against committing any “foolish or reckless acts.” North Korea said on Thursday that it had destroyed its only known nuclear test site, three weeks before its leader, Kim Jong-un, had been planning to meet with President Trump. Meanwhile, the country has designated remote Chagang Province as a Special Songun [military-first] Revolutionary Zone, fueling suspicions that the region is being turned into a mountain redoubt for the regime’s atomic weapons and missile programs despite Pyongyang’s promises to scrap its nuclear arsenal.