Complex sentence: The American and European far left have often attacked Zionism and Israel, habitually using polemics drawn from Christian theology, while at the same time denying that antisemitism has influenced and continues to influence Arab and Iranian world views.
Split into simpler sentences: The American and European far left have often attacked Zionism and Israel, habitually using polemics drawn from Christian theology. While at the same time denying that antisemitism has influenced and continues to influence Arab and Iranian world views.