President Trump says US Navy will begin blockade of Strait of Hormuz

Lebanon and Israel will hold a meeting on Tuesday at the U.S. State Department "to discuss the announcement of a ceasefire and the start date of negotiations between Lebanon and Israel under the auspices of the United States," according to the office of the Lebanese presidency.

This comes after the Lebanese and Israeli ambassadors to the U.S. spoke on the phone Friday as part of the framework for talks aimed at ending hostilities between the two countries. The U.S. ambassador to Lebanon, Michel Issa, who is currently in Washington, D.C., was also on the call.

-ABC News' Ghazi Balkiz

The Iranian delegation set to meet with U.S. officials for negotiations this weekend has arrived in Islamabad, Pakistan, according to Iranian state broadcaster IRIB.

The delegation is headed by Speaker of the Iranian Parliament Mohammad Ghalibaf.

IRIB says that the talks will begin only "If the other side accepts Iran's preconditions for starting the negotiations."

Iran has been insisting on a ceasefire in Lebanon, and Ghalibaf earlier Friday also said Iran's frozen assets would need to be unfrozen before talks started.

Iranian Foreign Minister Abbas Araghchi is also part of the delegation, along with several other high ranking officials and "security, political, military, economic and legal committees."

-ABC News' Somayeh Malekian

The Israel Defense Forces told ABC News that the "incident" in which Lebanese state security personnel were killed on Friday is under review.

The IDF said it was striking Hezbollah targets in the Nabatieh area.

-ABC News' Dana Savir

Officials from the National Security Council, the State Department, and the Department of Defense are also traveling to Pakistan in support of the negotiations with Iran, according to a U.S. official.

"As the Vice President said this morning, he is hopeful for a positive negotiation if the Iranians are willing to work in good faith. President Trump has a proven track record of achieving good deals on behalf of the United States and the American people, and he will only accept one that puts America first," White House spokesperson Anna Kelly said in a statement.

The Trump administration has been criticized for failing to include subject matter experts during previous rounds of negotiations with Iran.

As previously announced by the White House, Special Envoy Steve Witkoff and President Trump’s son-in-law Jared Kushner are traveling to Islamabad for the talks as well.