In this article

Taken from CNBC’s Daily Open, our international markets newsletter — Subscribe today

The ceasefire between Israel and Iran appears to be holding. In yesterday’s newsletter, we talked about how a blitzkrieg of missile-led diplomacy seemed to help de-escalate tensions.

The flipside of that strange path to a truce is that missiles are, well, fundamentally weapons. Mere hours after both countries agreed to the ceasefire, Israel said its longtime rival had fired missiles into its borders — an accusation which Tehran denied — and was preparing to “respond forcefully.” Probably with more missiles.

U.S. President Donald Trump — who reportedly brokered the ceasefire with Qatar’s Emir Sheikh Tamim bin Hamad Al Thani — expressed frustration with those developments.