Israel’s attack on Iran was long in the making – the result of years of meticulous planning by Israel and days of high-stakes talks between Tel Aviv and Washington, officials told CNN.

U.S. stock futures are higher even as fighting between Israel and Iran spiked oil prices. Futures linked to the blue-chip Dow rose 0.36%, while broad S&P 500 futures added 0.42% and tech-heavy Nasdaq futures gained 0.