Stock futures tick higher, but S&P 500 heads for fourth losing week in a row amid rising oil prices: Live updates CNBCOil Declines as US, Israel Seek to Ease Concerns Over Iran War Bloomberg.comBrent up but off highs, US crude finishes with small loss ReutersCould oil hit $200 a barrel? Analysts no longer think it is far-fetched Al JazeeraBusiness The Economist