imageLE BOURGET: Russian President Vladimir Putin on Monday accused Ankara of shooting down a Russian warplane to protect supplies of oil from the Islamic State group to Turkey, after snubbing his Turkish counterpart at a climate conference in France.

Putin fired the latest salvo in the furious war of words over the downing of the Russian jet on the Syrian border last week as the body of a pilot killed in the incident was returned home.

Turkish authorities meanwhile again pledged not to apologise over the incident, which has shattered ties between the two countries, as Moscow rolled out its sanctions aimed at exacting economic revenge on Ankara.

After rejecting Turkish leader Recep Tayyip Erdogan's offer of face-to-face talks on the sidelines of a UN climate summit outside Paris on Monday, Putin accused Ankara of seeking to protect IS oil exports — an important source of funds for the jihadist group.

“We have every reason to think that the decision to shoot down our plane was dictated by the desire to protect the oil supply lines to Turkish territory, right to the ports where it is loaded onto tankers," Putin said during a news conference on the fringes of the climate talks, echoing similar accusations he made last week.

“We have received additional information which unfortunately confirms that this oil, produced in areas controlled by the Islamic State and other terrorist organisations, is transported on an industrial scale to Turkey."

The downing of the Russian jet on the Turkey-Syria border — the first time a NATO member has shot down a Russian plane since 1952 — has hammered ties between the two rival players in the Syria conflict.

Putin did meet US President Barack Obama, who “expressed his regret" over the loss of life in the plane downing and called for a “de-escalation between Russia and Turkey", a White House official said.

Russia on Monday laid out more details of retaliatory economic sanctions aimed at denting Turkey's key tourism and agricultural sectors.

Moscow announced it will halt fruit and vegetable imports from Turkey after Putin signed a decree over the weekend banning charter flights and the sale of package holidays, and scrapping Russia's visa-free regime with the country.

Prime Minister Dmitry Medvedev called the moves a “first step" as Moscow also said it would limit Turkish transport firms and tighten controls on construction contracts.

The authorities however stopped short of targeting Russia's major joint energy projects with Turkey.

Copyright AFP (Agence France-Presse), 2015