British Prime Minister Rishi Sunak denounced on Saturday Iran’s execution of Iran of British-Iranian national Alireza Akbari, calling it a barbaric act that would not go unpunished.
"I am appalled by the execution of British-Iranian citizen Alireza Akbari in Iran," Sunak wrote on Twitter. "This was a callous and cowardly act, carried out by a barbaric regime with no respect for the human rights of their own people."
Earlier, the Iranian judiciary's Mizan news agency reported the execution of the former Iranian deputy defence minister who had been sentenced to death on charges of spying for Britain.
In like manner, British Foreign Secretary James Cleverly tweeted: "This barbaric act deserves condemnation in the strongest possible terms. This will not stand unchallenged."
Iran’s foreign ministry announced that it had summoned the British ambassador to Tehran hours after a British-Iranian dual national was executed for espionage in the Islamic republic.
"In response to Britain's unconventional interventions, including in the national security field of the Islamic Republic of Iran, today Simon Shercliff, the ambassador of this country in Tehran, was summoned," the ministry said in a statement.