Iranian security forces stand guard in front of the British embassy in the Iranian capital of Tehran on Jan 12, 2020, during demonstrations following the British ambassador's arrest for allegedly attending an illegal demonstration. (ATTA KENARE / AFP)

TEHRAN/DUBAI - The British ambassador to Tehran has left the country by earlier notice, official IRNA news agency reported on Wednesday.

"Based on the diplomatic protocols, ambassadors and diplomats can go to their respective countries on leave or for any other purpose by submitting a note" to the country of their mission, according to the report.

Accordingly, "the Britain ambassador Robert Macaire has left Iran by earlier notice and in accordance with regulations," IRNA said. 

On Tuesday, Iranian Judiciary spokesman Gholamhossein Esmaili said that Britain ambassador to Tehran should be expelled from Iran over the alleged "participation" of the envoy in anti-government protests.

Iranian Judiciary spokesman Gholamhossein Esmaili said earlier that Britain's ambassador to Tehran should be expelled from Iran over the alleged "participation" of the envoy in anti-government protests

Iranian officials arrested Robert Macaire on Saturday amid anti-government protests outside a university in Tehran and detained him for more than an hour. He was eventually released. 

The ambassador's departure came on the day Iranian President Hassan Rouhani dismissed British Prime Minister Boris Johnson's proposal for a new "Trump deal" aimed at resolving a nuclear row, saying it was a "strange" offer and criticising US President Donald Trump for always breaking promises.

Johnson, who has praised Trump as a great dealmaker, called on Tuesday for the president to replace Iran's 2015 nuclear deal with major powers with his own new pact to ensure Tehran does not get an atomic weapon.

Trump said he agreed with Johnson that a “Trump deal” should replace the Iran nuclear deal. 

READ MORE: Iran's Zarif says nuclear pact not dead, wary of 'Trump deal'

"This Mr. Prime Minister in London, I don’t know how he thinks. He says let’s put aside the nuclear deal and put the Trump plan in action," Rouhani said in a televised speech.

“If you take the wrong step, it will be to your detriment. Pick the right path. The right path is to return to the nuclear deal."

Rouhani told Washington to return to the nuclear pact, which Washington abandoned in 2018. He said Iran could reverse steps that exceeded restrictions in the agreement as soon as sanctions are lifted.

In this photo released by official website of the Office of the Iranian Presidency, President Hassan Rouhani speaks in a meeting in Tehran, Iran, Jan 14, 2020. (IRANIAN PRESIDENCY OFFICE VIA AP)

In its biggest step away from the agreement yet, Iran announced on Jan 5 it would abandon all limitations on enriching uranium set down in the pact.

Britain, France and Germany reacted by activating a dispute mechanism in the deal on Tuesday, which eventually could lead to the reimposing of UN sanctions. Iran called this step a “strategic mistake”.

The flare-up in nuclear diplomacy comes as military confrontation between Washington and Tehran reached a new peak.

We intend to file lawsuits in Iran, Iraq and the Hague court (International Court of Justice) against the military and government of the U.S. and against Trump.

Gholamhossein Esmaili, Spokesman for Iran's Judiciary, was quoted as saying

The United States killed Iranian military commander General Qassem Soleimani in a drone strike in Baghdad on Jan 3. Tehran responded a week ago by launching missiles at US targets in Iraq. 

Rouhani repeated Iran's longstanding position that peace can come to the Middle East only when the United States withdraws from the region.

Iran judiciary says to sue US for Soleimani's assassination

Iran's Judiciary spokesman said Wednesday that Iran will sue Trump and the US military for Soleimani's assassination, Tehran Times daily reported Wednesday.

"We intend to file lawsuits in Iran, Iraq and the Hague court (International Court of Justice) against the military and government of the U.S. and against Trump," Esmaili was quoted as saying.

There is no doubt that the US military has done a "terrorist act" by assassinating the Soleimani and Trump has confessed doing "the crime," said Esmaili.

"We will initially file a lawsuit in Iran, which is legal under the Islamic Penal Code," he said, adding that "then, we will do the same in Iraq and the Hague court against Trump and the U.S. military."

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