President Joe Biden told reporters Friday that the Israelis have "not concluded" how they will retaliate to Iran's missile attack, saying it's "under discussion."

During remarks in the White House briefing room, the president did say that if he "were in their shoes" he would be "thinking about other alternatives than striking oil fields."

Pressed further on how Israel should respond, Biden said, "That's between me and them."

Asked by ABC News' Selina Wang about the general state of diplomacy with Israel, coming off a week where the president's calls for a cease-fire in Lebanon were chiefly ignored, Biden defended his relationship with the country.

"Look, our teams are in contact 12 hours a day. They're constantly in contact," Biden said. "They're not going to make a decision immediately."

On whether he thinks the Israelis are going to listen to his advice, Biden said, "What I know is the plan that I put together received the support of the U.N. Security Council and the vast majority of our allies around the world as a way to bring this to an end."

"Look, the Israelis have every right to respond to the vicious attacks on them, not just from Iranians but from everyone to Hezbollah to the Houthis," he said. "But the fact is that they have to be very much more careful about dealing with civilian casualties."

-ABC News' Justin Gomez

American self-defense strikes were conducted on Houthi targets in Yemen on Friday, a United States official confirmed to ABC News.

U.S. Central Command said its forces conducted strikes on 15 Houthi targets, including "Houthi offensive military capabilities," in Iranian-backed Houthi-controlled areas of Yemen.

"These actions were taken to protect freedom of navigation and make international waters safer and more secure for U.S., coalition, and merchant vessels," CENTCOM said in a statement.

The strikes come a week after U.S. Navy warships in the Red Sea intercepted Houthi drones and missiles fired at the ships, a U.S. official confirmed to ABC News. There was no damage to U.S. Navy ships, the official said.

Houthi rebels have been targeting commercial ships in the Red Ship for months, as part of a campaign they've said is to force an end to Israel’s campaign against Hamas in Gaza.

-ABC News' Matt Seyler and Ahmed Baider

The Israel Defense Forces said Friday it's killed 250 Hezbollah members, including 20 commanders, over the past four days through "targeted activities" in southern Lebanon.

Israeli forces have also struck more than 2,000 military targets, "including terrorists, terrorist infrastructure, military buildings, weapon warehouses, launchers, and more," the IDF said in a statement.

Eleven paramedics were killed on Friday in the ongoing Israeli attacks in Lebanon, according to Hezbollah.

That includes seven who died in a strike on ambulance crews and two killed in a strike on an ambulance center, Hezbollah said.

Amid increased fighting between Israel and Hezbollah over the past two weeks, 97 paramedics have been killed and 188 have been injured in Lebanon, the Lebanese Minister of Public Health Dr. Firas Al-Abyad said Thursday.

Forty-five medical centers and 128 medical vehicles have been damaged, Al-Abyad said.

Over the past 24 hours, 37 people have been killed and another 151 injured in Lebanon from various Israeli attacks, the Lebanese Ministry of Public Health said Friday.

Overall, 2,011 people have been killed and 9,535 injured over the past two weeks, it said.

-ABC News' Ghazi Balkiz