WASHINGTON — Launching a major attack alongside Israel against Iran, US President Donald Trump is openly pursuing the goal he once adamantly rejected — regime change. Trump said that the bombing campaign — which followed a massive military buildup in the Middle East unseen since the 2003 invasion of Iraq — killed Iran’s supreme leader Ayatollah Ali Khamenei, a US nemesis in power since 1989. For weeks Trump had suggested a more limited goal of forcing a deal to end Tehran’s contested nuclear program, and joined Israeli Prime Minister Benjamin Netanyahu in calling on Iranians to topple the Islamic republic. […]... Keep on reading: In Iran attack, Trump seeks what he foreswore -- regime change