Iran says it has evidence proving the CIA is responsible for the assassination of a nuclear scientist, and that Britain played an "obvious role" in the plot. Meanwhile, according to The Wall Street Journal, the U.S. has delivered several private messages to Israel, warning the nation not to attack Iran. As tensions between Tehran, the U.S. and Israel rise, Washington is reportedly prepping military action in the event Israel jumps the gun and decides to attack. Specifically, officials believe the U.S. Embassy in Baghdad may be a target. The U.S. already has 15,000 troops in Kuwait and an aircraft carrier strike group is in the Persian Gulf. Thursday, Obama spoke to Israeli Prime Minister Benjamin Netanyahu by phone.