The Japanese government will vow in key security documents to be revised this month to acquire "counterstrike capability" but exclusively for defense purposes under the war-renouncing Constitution, a government source said Friday.The revision to Japan's National Security Strategy and two other documents, including the controversial idea of allowing the country to fire upon and disable enemy missiles before they are launched from foreign territory, comes as North Korea launches ballistic missiles and China increases its military buildup.While the mention of enemy base strike capability heral…READ FULL ARTICLE