A top Iranian lawmaker confirmed Wednesday that Russian warplanes are using an airbase on its territory, as Moscow announced it conducted another airstrike in Syria with jets that took off from Iran.

The operations have been authorized by Iran's Supreme National Security Council and are based on a deal between Iran, Russia, Syria and Iraq, the head of parliament's national security committee, Alaeddin Boroujerdi, said in comments carried by Iranian state news agency IRNA.

He specified that the jets were using the Nojeh airbase in Iran's western Hamadan province to refuel. Hamadan is much closer to positions of the Islamic State extremist group than the base Russia had previously been using, Khmeimim, in coastal northern Syria.

"The matter should be considered a strategic and necessary cooperation in the fight against terrorism," said former Iranian foreign minister Ali Akbar Velayati, who is currently a foreign policy adviser to Iran's supreme leader.

The cooperation does not violate UN resolutions and has been approved by Syria, he said.

Earlier, the speaker of Iran's parliament, Ali Larijani, denied that Russian warplanes were using Iranian territory.

Russia attested Wednesday that its use of the Iranian airbase does not violate UN Security Council Resolution 2231, which forbids the supply, sale or transfer of combat aircraft to Iran without prior approval.

US State Department spokesman Mark Toner told reporters Wednesday that State Department lawyers were in the process of assessing the legality of the flights. Russia would have an opportunity to make its case to the Security Council if the US did raise questions, he said.

US Air Force Secretary Deborah Lee James told reporters in New York that Russia's move to launch attacks from an Iranian airbase was "yet again another complication in an already very complex environment."

She said Russia had notified the US that its jets would take off from Iran in what she called "a little bit of an advance warning" to avoid accidents or the Russian planes being shot down by mistake.

"There is no broader coordination. There is nothing beyond safety of flights," James said.

It is unclear how long Russia intends to use the Iranian airbase.

"Whether it's a permanent thing, whether it's a temporary thing - I have no idea," James said.

Russia and Iran are longtime allies of Syrian President Bashar al-Assad. Russia and the US support opposing sides in Syria but agree on the need to eliminate UN-designated terrorist groups, such as the Islamic State movement.

The Russia Defence Ministry said Wednesday that Su-34 warplanes took off from the Iranian airbase and conducted an airstrike against Islamic State targets in the Syrian province of Deir al-Zour.

The attack hit two Islamic State command points and large training camps, "eliminating more than 150 militants," the ministry said in comments carried by TASS.

On Tuesday, Russian warplanes used an Iranian airbase for the first time for military actions in Syria.

Latest news

Syrian opposition rules out future role for President al-Assad

The Syrian opposition said Friday it would not accept any role for President Bashar al-Assad in the future of the war-torn country, reacting to a recent US shift saying that removing al-Assad is no longer a priority for Washington.

Russian Army integrates breakaway forces of Georgian province

Parts of the small fighting forces of the Georgian breakaway province of South Ossetia have been placed under Russian military control, Russian Defence Minister Sergei Shoigu said on Friday.

Czech Republic's Pilsner Urquell beer is now Japanese

Japanese brewing company Asahi completed its takeover of the Czech brewery Pilsner Urquell on Friday, Asahi said in a statement.

Judge approves 25-million-dollar settlement of Trump University case

A US district judge on Friday approved a 25-million-dollar settlement of lawsuits and state fraud allegations against Trump University, the US president's now-defunct business venture.

Former Thai premier Thaksin to junta on reconciliation: 'Cut me out'

Former Thai prime minister Thaksin Shinawatra on Friday announced that he is not interested in the junta-led reconciliation process, three days after the junta handed him a half-a-billion-dollar tax bill for his past business deal.

Dalic: We welcome possible deal between Agrokor and banks

The government welcomes the possibility of an agreement being concluded between the Agrokor food company and creditor banks, and the bill on vitally important companies is not a fallback plan but the result of the government's care for the overall economic and financial stability of Croatia, Deputy Prime Minister and Minister of Economy Martina Dalic told a press conference in Zagreb on Friday.

Croatia, China sign action plan for cooperation in agriculture

The Croatian and Chinese ministries of agriculture on Friday signed an action plan for cooperation in the field of agriculture for the period 2017-2018, the Croatian ministry said in a statement.

ZSE indices up, Agrokor shares in focus of investor interest

The Zagreb Stock Exchange (ZSE) indices on Friday rose by more than 1.8%, with stocks of the Agrokor food and retail concern being in the focus of investor interest again.

Berlin police defend handling of Berlin market attacker

Berlin police defended themselves on Friday against accusations that they stopped surveillance on Berlin Christmas market attacker despite knowing in June 2016 he was dangerous.

Croatia, creditors tailor emergency measures to save tottering giant

Croatia's tottering retail and food giant Agrokor reached an agreement with its creditors, putting its debts standby and allowing it to continue working during emergency restructuring, the Croatian branch of Austria's Erste Bank said Friday.

Agrokor's creditors say standstill agreement to go into force today

A standstill agreement regarding the Agrokor concern's existing financial obligations to banks will take effect on Friday, additional capital will be injected into the concern in the coming days and the concern will be actively restructured, which includes a change of its management, it was said on Friday after a meeting between Agrokor's suppliers and creditor banks.

Palestinians, UN slam Israel's new settlement plan

Palestinians, Israeli activists and the UN lambasted the government of Israeli Prime Minister Benjamin Netanyahu on Friday, a day after it gave the go-ahead for the first new West Bank settlement in a quarter of a century.

South Sudan rebels release three abducted foreign oil workers

South Sudanese rebels have released three foreign engineers they abducted in early March in the oil-rich Upper Nile region, Foreign Affairs Ministry official Mawein Makol Arik said on Friday.

Turkish opposition: Imprisoned party chief has gone on hunger strike

The head of Turkey's pro-Kurdish opposition party has launched a hunger strike from prison.

European leagues threaten Champions League schedule clashes

The European Professional Football Leagues (EPFL) on Friday threatened schedule clashes on Champions League matchdays in an ongoing dispute with the governing body UEFA.

Danish court revokes citizenship of IS volunteer

A Danish appellate court on Friday stripped a man of his Danish citizenship for volunteering to fight for the extremist Islamic State in Syria.

Banks and Agrokor agree on key elements of standstill agreement

Member banks of the coordinating committee of financial creditors and representatives of the Agrokor food company have in principle agreed on key elements of a standstill agreement, which is expected to be signed later today, announcing changes in the company's management team, Erste Bank said in a statement on Friday afternoon.

Syrian man on trial in Sweden; mosque attack labelled terrorism

A Syrian man went on trial Friday in the southern Swedish city of Malmo, charged with terrorism and arson after an attack last year on a building used as an assembly hall by Shiite Muslims.