(Want to get this briefing by email? Here’s the sign-up.)

Good morning.

Here’s what you need to know:

• The “mother of all bombs.”

Officials in Afghanistan said today that dozens of militants had been killed after the U.S. dropped the most powerful conventional bomb in its arsenal on an Islamic State cave complex. The full extent of the damage was still being assessed.

The Pentagon gave no casualty totals for Thursday’s attack, but in a separate announcement it said that an airstrike in Syria had killed 18 fighters allied with the U.S.

The admission raised concerns about whether the White House is being sufficiently careful in approving airstrikes in conflict zones.