North Korea appears to be sticking to its denuclearization pledge,... dismantling certain facilities,... but it's unclear if the move is a permanent one. <br /> U.S.-based North Korea-monitoring website 38 North says.... commercial satellite images show a shelter at a truck factory in the city of Pyongsong was torn down,... rebuilt and dismantled again over the course of eight months. <br />The shelter was first constructed in mid-October last year,... and it was later revealed to have been used to test the launcher of the regime's Hwasong-15 ICBM. <br />In March, the shelter's covering was removed, but in April the structural framework was rebuilt,... and by September only the reinforced pad was left. <br />However, 38 North said,.... there's no clear explanation for the activities. <br />
