Israeli Prime Minister Benjamin Netanyahu warned Iran that if hostilities continue Israel will be more aggressive, he said in a message to Iran's leaders at the Negev Conference.

"We are prepared for any scenario. I can tell you only one thing, and I will say this to the leaders of Iran: Do not count on it being quiet if you attack us. Do not count on a rerun. Because it will not be a rerun, and that was already powerful enough. This will be a different event, much more powerful," Netanyahu said.

Three Liberia-flagged oil tankers were attacked in separate incidents off Oman’s coast on Tuesday, leaving three crew members missing and six injured, Oman’s Maritime Security Center said.

The tanker AL BAHYAH, owned by UAE-based AL BAHYAH INC, was attacked off Oman’s Musandam governorate. Eighteen crew members were evacuated by nearby vessels, while three remained missing, Oman’s military media authority said in a statement.

In a separate incident, the Liberia-flagged tanker MOMBASA B was attacked off Musandam, causing it to lose propulsion, the center said. All 21 crew members were evacuated by nearby vessels, including six who suffered injuries of varying severity.

A third Liberia-flagged tanker, STOLT MAGNESIUM, was attacked off Oman’s South Al Sharqiyah governorate, outside Omani territorial waters. The attack caused a fire in the vessel’s engine room. All 23 crew members aboard had been evacuated and were in good health, according to Oman.

The statements did not identify the cause of the attacks or attribute responsibility. An Omani navy vessel was monitoring developments in the incidents off Musandam, according to Oman.

Kuwait said its air defenses are currently confronting missile and drone attacks, with explosions being the result of interceptions.

President Donald Trump backed off from his threat to impose a 20% toll on cargo transiting the Strait of Hormuz on Monday, claiming it would be replaced by future trade and investment deals with Gulf allies.

The announcement comes just a day after Trump initially announced the 20% fee, throwing more uncertainty into the global oil market. U.S. oil was trading up over 3% Tuesday morning, and global oil up over 4%.

Trump wrote on social media that the decision came after "highly productive conversations with Middle East leadership," and would include “massive” investments into the U.S., though he did not offer any specifics on the deals.

“As everyone is aware, we have the largest Dollar Investment into the United States, of any Country in History, but these new Investments will make that Number even larger,” Trump said.

The president also again asserted that the Strait of Hormuz was open to “ALL Ship traffic except for Iran” as the U.S. reimplements the naval blockade on Iranian ships and ports, as the country has continued to strike commercial vessels moving through the strait, claiming it is closed to traffic.

“That is because of their lying, violent, malicious leadership, which is taking them down the path of TOTAL DESTRUCTION,” Trump said of the renewed blockade. “We will therefore have a FULL Blockade, but only on Ships coming to and from Iranian ports, or carrying anything have to do with Iranian cargo.”

-ABC News' Nicholas Kerr