Teacher:In this task, you are given a text of many news articles seperated by special token "|||||". Your task is to summarize them.
Teacher: Now, understand the problem? Solve this instance: S. Korea calls North missile tests calculated provocation 
  
 (AFP) – 14 hours ago 
  
 Seoul — South Korea on Friday labelled North Korea's test firing of four short-range missiles a calculated, provocative act timed to coincide with South-US joint military exercises. 
  
 North Korea test-fired the missiles into the Sea of Japan on Thursday, three days after the joint drills kicked off in the face of vocal opposition from Pyongyang. 
  
 "With the exercises underway, we see the firings as a calculated, provocative act," defence ministry spokesman Kim Min-Seok told journalists. 
  
 He noted that the launches also came days after an incursion by a North Korean patrol boat across the disputed Yellow Sea border that has been the scene of brief but bloody naval clashes in the past. 
  
 Kim said the tests were of Scud-type missiles at the longer edge of the short-range spectrum, with an estimated reach of 300-800 kilometres (185-500 miles) -- capable of striking any target in the South. 
  
 "If the North re-engineers Scuds or tests them, we always undertake a serious analysis to consider counter-measures," he said. 
  
 Kim stressed that the annual military drills with the United States would continue as planned. 
  
 In Washington, State Department spokeswoman Jen Psaki urged North Korea "to exercise restraint and take steps to improve its relations with its neighbours". 
  
 But Pentagon spokesman Colonel Steven Warren acknowledged that such short-range tests did not put the North in breach of international resolutions. 
  
 "We view this as an unannounced weapons test that we see somewhat regularly," he told reporters in Washington. 
  
 It is not unusual for North Korea to carry out such tests and observers said they were unlikely to trigger a significant rise in military tensions. 
  
 Despite the start of the South Korea-US drills on Monday, which the North routinely condemns as rehearsals for invasion, relations between Seoul and Pyongyang are currently enjoying something of a thaw. 
  
 This year's drills overlapped with the end of the first reunion for more than three years of families divided by the Korean War -- an event that has raised hopes of greater cross-border cooperation. 
  
 Pyongyang had initially insisted that the joint exercises be postponed until after the reunions finished on Tuesday. But Seoul refused and -- in a rare concession -- the North allowed the family gatherings on its territory to go ahead as scheduled. 
  
 North Korea has hundreds of short-range missiles and has developed and tested -- with limited success -- several intermediate-range models. 
  
 Its claims to have a working inter-continental ballistic missile have been treated with scepticism by most experts, but there is no doubt that it is pushing ahead with an active, ambitious missile development programme. 
  
 Copyright © 2014 AFP. All rights reserved. More » ||||| SEOUL, South Korea (AP) — North Korea fired four suspected short-range missiles into its eastern waters on Thursday, a South Korean official said. 
  
 North Korea routinely conducts short-range missile tests, but the latest came three days after South Korea and the U.S. began annual military drills that Pyongyang calls a rehearsal for invasion. 
  
 A Defense Ministry official said North Korea fired four projectiles believed to be short-range missiles with a range of more than 200 kilometers (about 125 miles) into the waters off its east coast. The official spoke anonymously citing department rules. 
  
 North Korea has recently eased tension by taking a series of conciliatory gestures toward South Korea such as allowing reunions between relatives who have been separated since the Korean war 60 years ago. 
  
 Earlier Thursday, North Korea presented to the media a South Korean missionary who it says was arrested last year for allegedly trying to establish underground Christian churches in the country. |||||
Student:
A North Korean ship slipping across the South's borders was apparently just the opening act. Days after South Korea began its war games with the US, North Korea has fired four, suspected short-range missiles from its southeastern coast toward the sea, a South Korean defense official said, per Yonhap News. "We first believed they were an improved version of the KN-02 ground-to-ship missile, but we now believe they are Scud series missiles, as they have a range of more than (125 miles)," says a government source. While the AP notes that missile launches are routine in the North, a Scud launch would be North Korea's first since 2009. South Korea notes it "will maintain tight vigilance in preparation for additional launches or any military provocation from the North," while an expert tells the AFP that the launch is "mainly about sending a message—about the drills and also its anger over the recent UN rights report ... I don't think it will take any further steps and risk escalating tensions. Pyongyang is more interested in seeing some benefit from its compromise on the reunions."