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US, Japan conduct test of joint missile
[WASHINGTON] The United States and Japan have conducted the first interception of a ballistic missile target using a jointly built system, amid heightened tensions over North Korea's missile programme.
The two nations have been working together since 2006 to develop a variant of the Standard Missile-3, a ship-launched missile that operates as part of the Aegis Ballistic Missile Defense System.
Friday's test off Kauai in Hawaii saw the Standard Missile-3 "Block IIA" successfully hit its target in space, the US Missile Defence Agency said.
According to the MDA, America has so far spent about US$2.2 billion on the system and Japan about US$1 billion.
"We are both deeply concerned about North Korea's capabilities, and we are constantly working to improve our defence capabilities," MDA spokesman Chris Johnson said Monday.
"It makes sense for the US and Japan to share some of that burden." Mitsubishi and Raytheon both make parts of the missiles, which are assembled in the United States, and which are designed to defeat medium- and intermediate-range missiles.
The test occurred as Pentagon chief Jim Mattis was in East Asia on his first overseas trip as defence secretary.
He said Friday that any nuclear attack by North Korea would trigger an "effective and overwhelming" response, as he sought to reassure Asian allies rattled by President Donald Trump's isolationist rhetoric.
South Korea is working with the United States to install another system, the Terminal High Altitude Area Defence (THAAD) system, this year to prevent against any missiles from the North.