N. Korea launched two short-range unidentified projectiles early Tuesday: S. Korea's JCS

North Korea fired yet more missiles into the East Sea on Tuesday morning.Two missiles were fired around four hours ago.It's the second launch in four days and... fourth in less than two weeks.Our Kim Ji-yeon is at Seoul's defense ministry.Ji-yeon, more details about these latest launches are starting to filter in....South Korea's Joint Chiefs of Staff says North Korea launched the two short-range missiles in the early hours ofTuesday... towards the East Sea... at around 5:24 AM and 5:36 AM, Korea time, from its southwestern county of Kwail in Hwanghaenam-do Province.The missiles had an altitude of around 37 kilometers... and flew some 450 kilometers... recording a maximum flight speed of Mach 6-point-9.The Joint Chiefs of Staff said the missiles seemed to have similar characteristics to the short-range ballistic missiles fired by the North on July 25th... and said it's working with the U.S. to verify further information about the missiles... while monitoring the situation for additional launches.The Blue House held an emergency meeting to discuss the latest launch, according to its spokesperson Ko Min-jung.Today's firing is the fourth such launch in less than two weeks. Last Friday, North Korea fired two short-range projectiles into the East Sea. It had launched two short-range ballistic missiles just two days before that.According to the Joint Chiefs of Staff they were all short-range and ballistic... and were fired in the early hours... in a northeasterly direction towards the East Sea... all flying at altitudes of less than 50 kilometers.The Joint Chiefs believe the North test-fired a new type of short-range ballistic missile, North Korea's version of Russia's Iskander-class missile... which is believed to be harder to intercept due to its complicated flight trajectory... although the Joint Chiefs of Staff made reassurances that they're able to neutralize the missiles by North with the existing Patriot anti-missile system.The missiles were presumed to have been launched from the ground using a transporter erector launcher,... which is used to move missiles to a desired launch location.That means the missiles are not bound to a fixed launch site and the North's movements are therefore harder to predict.Today's launches came a day after South Korea and the U.S. began their combined military exercise as scheduled... despite North Korea's warnings against it, right?Yes the "crisis management staff training" kicked off on Monday as a preliminary session in the run-up to their summertime command post exercise... which is expected to start this Sunday and continue for about three weeks.The drill is aimed at testing South Korea's initial operational capability for the envisioned transfer of the wartime operational control from Washington to Seoul.Issuing a statement right after the firing Tuesday, North Korea's foreign ministry said it could seek "a new road," other than engagement, calling the joint exercise a violation of a se