By Luke Baker and Dan Williams JERUSALEM (Reuters) - With a deal on Iran's nuclear program drawing near, Israel is beginning to look at what comes afterwards and how best to position itself for the longer term. Publicly, Israeli officials have not given up trying to influence what appear to be the closing stages of negotiations, although gaps could persist beyond an end-June deadline. Energy Minister Yuval Steinitz, Prime Minister Benjamin Netanyahu's lead official on the issue, is exerting pressure where he can to try to tighten technical aspects of the deal.