DUBAI, Aug 5 (Reuters) - Hardline Iranian President Ebrahim Raisi took the oath of office before parliament on Thursday, with the Islamic Republic's clerical rulers facing growing crises at home and abroad.
The mid-ranking Shi'ite cleric formally started his four-year term on Tuesday when supreme leader Ayatollah Ali Khamenei endorsed his victory in the June election, when most prominent rivals were barred from standing.
With Raisi's presidency, all branches of power in Iran will be controlled by anti-Western hardliners loyal to Khamenei.
"In the presence of the holy Koran and before the nation, I swear to the omnipotent God to safeguard the official religion of the country and the Islamic Republic as well as the country’s constitution," Raisi said in a ceremony broadcast live on state television.
Raisi, who is under U.S. sanctions over allegations of human rights abuses when he was a judge, has pledged to take steps to lift broader sanctions that have cut Iran's oil exports and shut it out of the international banking system.
"The Iranian people expect the new government to improve their livelihoods ... All illegal U.S. sanctions against the Iranian nation must be lifted," Raisi said after being sworn in, vowing to serve the nation and improve ties with its neighbours.
Iran has been negotiating with six powers to revive a 2015 nuclear deal abandoned three years ago by then U.S. President Donald Trump, who said it was too soft on Tehran.
Under the deal, Iran agreed to curb its nuclear programme in return for the lifting of international sanctions, but Trump withdrew from the deal and reimposed sanctions that have crippled Iran's economy. Tehran has since breached limits imposed on its nuclear activities under the agreement.
Like Khamenei, Raisi has endorsed the nuclear talks, but he is widely expected to adopt a tougher line in talks that have stalled. The supreme leader has the last say on all state matters including nuclear policy.
Iranian and Western officials have said significant gaps remain in the nuclear talks and have yet to announce when the talks, whose last round ended on June 20, will resume.
The United States urged Raisi to resume talks "soon," saying the diplomatic window would not stay open forever.
"We hope that Iran seizes the opportunity," State Department spokesman Ned Price said. read more
With economic misery palpable and signs of growing anger among Iranians, escaping U.S. sanctions will be Raisi's top economic goal, political analysts say.
"The new government will work to improve the economy to resolve the nation's problems," Raisi said.
Tensions have simmered between Iran and the West after a suspected drone attack last week on an Israeli-managed tanker off the Omani coast that killed two crew members.
The United States, Israel and Britain blamed the incident on Iran. Tehran has denied responsibility, and warned it would respond promptly to any threat to its security.
Iran also denied involvement in a hijacking incident in the Arabian Sea on Tuesday. Maritime security sources said they suspected Iranian-backed forces were behind the attack on a Panama-flagged tanker and Washington said it believed Iranians hijacked the vessel but was not in a position to confirm.
Appointed by Khamenei to run the judiciary in 2019, Raisi was placed under U.S. sanctions a few months later for the role he allegedly played in the executions of thousands of political prisoners in 1988. Iran has never acknowledged the killings.
A Khamenei protege, Raisi has said the U.S. sanctions were imposed on him for doing his job as a judge. Dissidents fear his presidency could lead to more repression.
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