Russia

They also narrowed down the area it was fired from to a field in territory controlled by Russian-backed rebels.

All 298 people on board the Boeing 777 died when it broke apart in mid-air flying from Amsterdam to Kuala Lumpur.

Russia says it cannot accept the findings as the final truth, saying no Russian weapons were taken to Ukraine.

In a phone call with Sergei Lavrov, Mr Kerry said the US held Russia responsible for the use of incendiary and bunker bombs against the city.

The US state department said it was making preparations to suspend talks.

Aleppo has come under heavy aerial bombardment since the end of a ceasefire a week ago.

In response to Mr Kerry's phone call, the Russian Deputy Ambassador to the UN, Evgeny Zagaynov, said the "trend" of Russia being blamed for the attacks in Syria must stop.

"I emphasise this to Russia: The United States continues to believe there is a way forward that, although rocky and difficult and uncertain, can provide the most viable path out of the carnage," Mr Kerry said in an unusually heated showdown at the UN Security Council in New York.

According to the news agency TASS, the documents were signed by the Russian foreign minister Sergei Lavrov and his Vanuatu counterpart Bruno Leingkone in New York.

The two met on the side of the UN General Assembly when Mr Lavrov encountered representatives from 12 Pacific Island countries.

Fiji and Russia agreed to abolish visa requirements after Mr Lavrov's visit to Fiji four years ago.

The plan will begin with a "cessation of hostilities" from sunset on Monday. Syrian forces will end combat missions in specified opposition-held areas.

Russia and the US will then establish a joint centre to combat jihadist groups, including so-called Islamic State (IS).

A Syrian opposition coalition has cautiously welcomed the agreement.

"We hope this will be the beginning of the end of the civilians' ordeal," said Bassma Kodmani, a spokeswoman for the High Negotiations Committee.

"We welcome the deal if it is going to be enforced."

After a day of marathon talks in Geneva, US Secretary of State John Kerry and Russia's Foreign Minister Sergei Lavrov announced the truce, which is set to come into force on Monday (local time), the first day of the Muslim holiday of Eid.

Mr Kerry said he believed the plan would lead to talks to "stop the conflict" which has raged for more than five years, killing more than 290,000 people and displacing millions.

He called on "every Syrian stakeholder" to support the plan to "bring this catastrophic conflict to the quickest possible end through a political process".

US officials described the intercept by the SU-27 jet on Wednesday as "dangerous and unprofessional".

Russia's defence ministry said the US plane had been approaching Russian territory and the SU-27 pilots had adhered to international rules.

Russia is currently carrying out military exercises in the Black Sea.

Pentagon spokesman Capt Jeff Davis said the US Navy P-8A Poseidon aircraft had been conducting routine operations in international airspace when the Russian fighter made the unsafe manoeuvre.

The 2021 World Biathlon Championships will take place in Tyumen, Russia, going against a request from the International Olympic Committee (IOCTyumen's bid was voted for ahead of those of Nove Mesto na Morave in the Czech Republic and Slovenia's Pokljuka at the International Biathlon Union (IBU) congress on Sunday.

The awarding of the event to the Russian city does not comply with a recommendation from the IOC issued in July following the publication of the McLaren Report.

Iranian foreign ministry spokesman Bahram Qasemi said the operation was "over for now" and the planes had gone.

Iran's Defence Minister Hossein Deghan had earlier criticised Russia for publicising the raids last week, saying it had exhibited a "show-off" attitude.

Russia for its part has confirmed that all of its planes used from Iran for Syria strikes are now back in Russia.

Russia. like Iran, is a key ally of Syria's President Bashar al-Assad.

Russian President Vladimir Putin said Russian trade sanctions on Turkey would be phased out "step by step".

"The priority is to get back to the pre-crisis level of co-operation," he told Turkish President Recep Tayyip Erdogan in St Petersburg.

Their relations soured last November when Turkey shot down a Russian bomber on the Syrian border.

It is Mr Erdogan's first foreign visit since an attempted coup last month. He has since launched a far-reaching purge of the armed forces and other state institutions.