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

The Israel Defense Forces have detained a United Nations peacekeeper in Lebanon "after blocking a logistics convoy," the United Nations Interim Force in Lebanon said in a statement Tuesday.

"Following direct and immediate contacts by UNIFIL's Head of Mission & Force Commander and our Liaison Branch, the peacekeeper was released in less than an hour," UNIFL said.

"Any detention of a United Nations peacekeeper is a blatant violation of international law. Any interference with the work of peacekeepers is also a violation of resolution 1701," UNIFIL added.

President Donald Trump has been made aware of Pakistan's proposed two-week deadline extension and "a response will come," White House press secretary Karoline Leavitt told ABC News.

-ABC News' Fritz Farrow

The prime minister of Pakistan is asking President Donald Trump to extend the deadline he set for Iran, saying diplomatic efforts are "progressing."

"Diplomatic efforts for peaceful settlement of the ongoing war in the Middle East are progressing steadily, strongly and powerfully with the potential to lead to substantive results in near future. To allow diplomacy to run its course, I earnestly request President Trump to extend the deadline for two weeks," the prime minister said in a statement.

"Pakistan, in all sincerity, requests the Iranian brothers to open Strait of Hormuz for a corresponding period of two weeks as a goodwill gesture. We also urge all warring parties to observe a ceasefire everywhere for two weeks to allow diplomacy to achieve conclusive termination of war, in the interest of long-term peace and stability in the region," the statement continued.

While messages are being passed between the U.S. and Iran, the two sides are not close to a deal and the process should not be viewed as formal negotiations, according to a Pakistani Security official familiar with the talks.

Iranian-affiliated cyber actors are targeting U.S. critical infrastructure, according to a new warning from the federal government.

Numerous agencies, including the FBI and NSA, "are urgently warning U.S. organizations of ongoing cyber exploitation of internet-connected operational technology (OT) devices, including Rockwell Automation/Allen-Bradley-manufactured programmable logic controllers (PLCs), across multiple U.S. critical infrastructure sectors," according to an alert published on Tuesday.

Multiple critical infrastructure sectors experienced disruptions, and in some cases "this activity has resulted in operational disruption and financial loss," the alert said.

The Iranian-backed group has targeted government services industry, water and wastewater systems and the energy sector, according to the agencies.

Iranian-backed actors have carried out similar actions in the past, according to the government.

-ABC News' Luke Barr