Iran live updates: US conducts 3rd consecutive night of strikes on Iran

The White House has formalized its reengagement in the war in Iran, notifying Congress on July 10 of renewed military action, according to a copy of the notice obtained by ABC News.

The White House notes in the letter, addressed to Senate President Pro Tempore Charles Grassley, R-Iowa, that "United States ground forces are not involved in these strikes" and that they will be "limited, measured, planned, and executed in a manner designed to minimize civilian casualties."

ABC News has reached out to the White House for comment on the letter.

Many Democrats in Congress have argued that the administration exceeded its 60-day authority to conduct military operations against Iran without congressional approval under the War Powers Act. The White House has previously said that the ceasefire was put in place ahead of that 60-day limit and that it was never reached.

It's unclear how this letter might affect that timeline and whether Republicans will argue that the July 10 letter resets the clock.

-ABC News' Allison Pecorin

U.S. armed forces will resume their blockade of the Strait of Hormuz Tuesday, according to U.S. Central Command.

"At the Commander in Chief's direction, U.S. Central Command (CENTCOM) forces will resume blockading maritime traffic entering and exiting Iranian ports on July 14 at 4 p.m. ET," CENTCOM announced Monday afternoon.

"CENTCOM forces will enforce the blockade against vessels transiting to or from Iranian ports and coastal areas," the statement further said, adding that the U.S. military "continues to support traffic flow through regional waters for all vessels not violating the blockade."

President Donald Trump announced earlier Monday that the U.S. would reinstate the naval blockade against Iranian ships and ports and would charge a 20% fee on all cargo shipped through the Strait of Hormuz.

Iran pushed back swiftly against the president's declaration, with IRGC spokesman Ebrahim Zolfaqari saying in part that Iran "will under no circumstances allow the United States to interfere in the management of the Strait of Hormuz" and "will deal forcefully with any disruption to the passage of commercial vessels and oil tankers by the invading and pirate U.S. military."

Iranian Foreign Minister Abbas Araghchi said in response "POTUS is absolutely right. Whoever provides secure and safe passage of commercial vessels through the Strait of Hormuz should be compensated for this service. Iran has always been the GUARDIAN of the Strait and will remain so FOREVER. 20% is of course too much. We will be fair."

Oil prices climbed steadily all day amid the escalating rhetoric and are now spiking more than 9%. U.S. oil is now selling at around $78 a barrel and global oil is at about $83 a barrel.

-ABC News' Steven Beynon, William Gretsky and Zaki Zunaira

Iran will "continue to exercise our sovereignty and management over the Strait of Hormuz," according to a statement Monday from IRGC spokesman Hossein Mohebbi.

"Through its interference in the Strait of Hormuz, the United States has placed the security of global oil and gas supplies at grave risk, and it must bear responsibility for this," the statement said. We will continue to exercise our sovereignty and management over the Strait of Hormuz with full force and resolve, and we will compel foreigners and their allies to submit to the will of the Iranian people."

The statement came after President Donald Trump said on Monday that the U.S. would reinstate the naval blockade against Iranian ships and ports and would charge a 20% fee on all cargo shipped through the Strait of Hormuz, to cover “any and all costs necessary to do the job of providing safety and security to this very volatile section of the World.”

-ABC News' William Gretsky

President Donald Trump said on Monday that the U.S. would reinstate the naval blockade against Iranian ships and ports and would charge a 20% fee on all cargo shipped through the Strait of Hormuz.

“We are reinstating the THE IRANIAN BLOCKADE, so named because it is only stopping Iran’s ships or customers from entering or leaving,” Trump wrote on social media.

The president told Fox News earlier that the U.S. would take control of the Strait of Hormuz and get paid for protecting it, adding in his social media post that the U.S. would be the "guardian" of the strait and charge a 20% toll on cargo sent through the waterway.

Trump said that the fee would cover “any and all costs necessary to do the job of providing safety and security to this very volatile section of the World.”

-ABC News’ Emily Chang, Victoria Beaule and Nicholas Kerr