"All sides, views, and policies are covered", he said.
A spokesman said: "Attacks by the Houthi militia that is supported by Iran on oil installations in Saudi Arabia are a war crime".
Agressive U.S. rhetoric has raised fears that President Donald Trump's administration is angling for a new Middle East conflict, a culmination of the deterioration of U.S.
The remarks come amid rising tensions in the Mideast, with allegations of sabotage targeting oil tankers near the Persian Gulf, a drone attack by Yemen's Iranian-allied rebels and the dispatch of USA warships and bombers to the region.
However, the officials characterized the threat as not more credible or imminent than it was in the week prior, as the US moved military assets to the region and warned of Iranian-related threats.
One American official, speaking on the condition of anonymity to discuss confidential internal planning, said the new intelligence of an increased Iranian threat was "small stuff" and did not merit the military planning being driven by Mr. Bolton.
Secretary of State Mike Pompeo told media on May 6 that "it is absolutely the case that we've seen escalatory action from the Iranians", but he also said he couldn't be more explicit.
On Tuesday, Spain ordered a naval frigate to leave the Gulf, in an effort to show that the country is not part of the United States military presence there.
Iran called it "psychological warfare", and a British commander cast doubt on USA military concerns about threats to its roughly 5,000 soldiers in Iraq, who have been helping local security forces fight ISIS jihadists.
Major General Christopher Ghika said he has seen no recent worrisome activity by the Popular Mobilisation Forces (PMF), an umbrella organisation of Shia armed groups loosely affiliated with Iran.
The UAE's minister of state for foreign affairs, Anwar Gargash, said on Wednesday that, "we need to emphasise caution and good judgment. It is easy to throw accusations but it is a hard situation, there are serious issues and among them is Iranian behaviour", he said, mentioning concern about Iran's missiles and regional policy.
It was also reported on Tuesday that USA investigators believed Iran or groups its supported had used explosives to damage four tankers off the coast of the United Arab Emirates on Sunday.
However, he also said the UAE is "very committed to de-escalation" after the alleged sabotage of oil tankers off the country's coast on Sunday.
Earlier Wednesday, the US State Department ordered all non-emergency staff to leave its embassy in Baghdad and consulate in Arbil, citing a non-specific threat from "terrorist and insurgent groups" in Iraq that included "anti-US sectarian militias".
The United States invaded Iraq in 2003 to topple dictator Saddam Hussein, occupying the country until 2011, and then sending troops back in 2014 to help fight ISIS, which was quickly spreading its self-proclaimed caliphate over large parts of Iraq and Syria.
This is the latest round of escalating tensions with Iran, which Trump has targeted since coming into office.
With tensions between the two nations reaching unsafe levels, U.S. Democratic presidential candidates have joined progressive anti-war groups in vowing to oppose the Trump administration's efforts to start a military conflict with Iran. It cited an anonymous official as saying that Qatar's foreign minister, Sheikh Mohammed bin Abdulrahman Al Thani, had travelled to Tehran in recent days to speak with his Iranian counterpart, and that the USA was aware of the trip in advance.