The envoy, Amos Hochstein, held a second day of talks in the Lebanese capital to seek a truce between Israel and Hezbollah. The militant group’s leader said peace now depended on Israel.

President Biden spoke by telephone to President Volodymyr Zelensky of Ukraine about the security package, which includes munitions, armored vehicles and other weapons.

Mr. Pollard, who gave a range of classified documents to Israel starting in 1984, recently completed his parole. His case was a longstanding irritant to American-Israeli ties.

A day after Iranian missiles fell on bases housing American troops in Iraq, the president said that no Americans were harmed and that Iran now “appears to be standing down.”