Bitcoin falls early in the Asian session as news of Israel's attack on Iran spooks markets. The cryptocurrency, seen as a proxy for risk, slid 3% to $103,802.

Israel launched a wide ranging attack on Iran's nuclear facilities, rattling markets and sending investors fleeing into less risky assets.

Safe havens such as the Swiss franc, yen, and gold have gotten a boost, and markets will stay focused on breaking developments throughout the day. Other altcoins such as Ethereum and Ripple were also lower, down around 6% and 4%, respectively.