Keep it Simple. Don't Give long convoluted historical explanations.
Be brief.
Use images and analogues to involve emotions.
Be authentic, "I was in Israel..."
Be authoritative, quote objective sources.
Consider your audience. Try to stay within the presenters politics, style, etc...
Be inventive. Don't just write on Middle East issues or call Radio programs when they bring up that topic. Think of pro- Israel things to say for all kinds of contexts.
Support and reinforce pro-Israel statements.
Be sure your submissions make sense as a stand-alone piece. The readers will not have the original piece that you are replying to. Make sure you reference items.