Israel-Iran updates: Iran launches more missiles at Israel, sirens sound in Tel Aviv and Jerusalem

The IDF says it struck an Iranian refueling plane at the Mashhad airport in eastern Iran, which makes this, it says, the farthest strike into Iran since attacks began.

"At a distance of approximately 2,300 kilometers, the Air Force struck an Iranian refueling aircraft a short time ago at Mashhad Airport in eastern Iran," the IDF statement says. "The Air Force is working to achieve air superiority throughout Iran. This is the farthest strike since the operation began."

President Donald Trump told ABC News that "it's possible we could get involved" in the ongoing conflict between Israel and Iran.

The president made the comments to ABC News' Rachel Scott. He also reiterated that the U.S. is "not at this moment involved" in the conflict.

Trump also said that he would be "open" to Russian President Vladimir Putin being a mediator in the conflict. "He is ready. He called me about it. We had a long talk about it, " Trump said.

-ABC News' Rachel Scott

The IDF says missiles have been launched from Iran toward Israel and that "defensive systems are operating to intercept the threat." It also warned citizens to "enter a protected space and remain there until further notice."

The IDF said during a briefing Sunday that it has struck "over 250 targets" in Iran since the beginning of strikes earlier this week. It says it is still actively conducting strikes in the country.

The IDF spokesperson also confirmed it struck Yemen Saturday night, targeting a Houthi leader, but cannot confirm whether the strike was successful. There were also projectiles fired from Yemen overnight toward Israel, according to the spokesperson.

The spokesperson warned that "there will be further launches and impacts in the coming days" toward Israel and advised Israelis to pay attention to sirens and alerts.

-ABC News' Jordana Miller

The State Department is authorizing the "voluntary departure of family members and some non-emergency U.S. government employees" from Israel amid the country's escalating conflict with Iran, officials said on Sunday.

The U.S. embassy's shelter-in-place order for U.S. personnel in Israel remains in effect "until further notice" as a result of the conflict between Israel and Iran, the State Department said in a notice.

"U.S. citizens who wish to depart should not delay in taking advantage of commercial transportation options," the notice said.

-ABC News' Chris Boccia