March 5 (Reuters) - NATO has increased its alliance-wide ballistic missile defence posture following the intercept of a missile from Iran targeted at Turkey, its military headquarters said on Thursday.The posture will remain at the heightened level until the threat from Iran's "continued, indiscriminate attacks across the region subsides," Colonel Martin O'Donnell, spokesperson for the Supreme Headquarters Allied Powers Europe, said in a post on X.O'Donnell said NATO had "perfectly executed" its...