Last Sunday, Mr. Austin and Secretary of State Antony J. Blinken wrote in a letter to senior Israeli officials that the nation would face consequences — including a reduction in U.S. security aid — if humanitarian assistance to Gazans did not increase in the next 30 days.

Israel and its allies have successfully defended against Iran’s missile attacks thus far, but it has required an extraordinary level of cooperation, and the challenge is likely to only get harder if

Around 100 U.S. troops will soon be on active duty in Israel to help defend the country against the potent missile threat from Iran and its regional allies.