It remains to be seen how long the truce will hold and whether it will pave the way for a nuclear deal between the U.S. and Iran.

The Trump-brokered ceasefire between Iran and Israel has, for now, brought an abrupt and extraordinary end to one of the Middle East's most explosive confrontations in decades. Why it matters: The 12-day war sent shockwaves through a region already reeling from nearly two years of historic volatility and violence,