Complex sentence: British Foreign Secretary David Miliband announced that Britain would no longer tolerate legal harassment of Israeli officials in this fashion and arrest threats against visitors of Livni's stature would not happen again.
Split into simpler sentences: British Foreign Secretary David Miliband announced that Britain would no longer tolerate legal harassment of Israeli officials in this fashion. Miliband said the British government was determined that arrest threats against visitors of Livni's stature would not happen again.