Moving to Tunisia, IS militants have now claimed responsibility for an attack yesterday on a presidential guard bus that killed 13 people.
The bomb exploded in one of the main streets of the capital Tunis. President Beji Caid Essebsi imposed a curfew in the city and a state of emergency nationwide. It was the third major attack in Tunisia this year.
Turkey says that its pilots warned the Russian jet 10 times before shooting it down. Russia is now claiming -- via the rescued navigator -- that there were no warnings at all.
This is what the Russian navigator who was rescued after parachuting out of the downed Su-24 jet had to say to journalists about whether Turkey had issued warnings to the plane before shooting it down, according to pro-Kremlin outlet RIA Novosti.
In actual fact, there were no warnings at all. Neither over the radio traffic or visually. There was no contact at all. Therefore we went out on our combat course in the normal way. You have to understand what speed a bomber is going at and what that of an F-16 fighter is. If they had wanted to warn us, they could have shown themselves, taken a parallel course. But there was nothing like that. And the rocket hit the tail of our plane suddenly. We didn't even notice it visually, so that we could have made an anti-missile maneuver.
The rescued navigator from the downed Russian Su-24 jet has said that the plane did not receive a single warning from Turkey, "either visually or via radio," RIA Novosti is reporting.
Russia's Foreign Ministry has reacted angrily to media reports that Turkish and Russian Foreign Ministry officials have agreed to a meeting.
The Ministry is saying that Russian Foreign Minister Sergei Lavrov has not given his agreement to proposals for a meeting from his Turkish counterpart.
TASS has published a rather scathing response to the matter from Russian Foreign Ministry Spokeswoman Maria Zakharova:
We have noted the report by Reuters that cites a representative of the Turkish Foreign Ministry and talks about an alleged agreement being reached for a meeting between the foreign ministers in the coming days.
Such statements by the Turkish Foreign Ministry once again point to a lack of basic concepts of ethics and respect, and are representative in terms of veracity of everything that we are hearing from Ankara.
Zakharova said Lavrov had not agreed to "a single one of the many requests for a meeting" made during his phone call this morning with his Turkish counterpart.
"A big request to Turkish officials to stop the flow of information that does not correspond with the truth," Zakharova added.
Russia's Foreign Ministry has published details of Foreign Minister Sergei Lavrov's phone call this morning with his Turkish counterpart, Mevlut Cavusoglu.
Lavrov "expressed outrage" at the downing of the Su-24 jet, the Foreign Ministry report says.
It was emphasized that, with the shooting down of the Russian plane that had been carrying out tasks as part of Russia's anti-terrorist campaign in Syria and which had not violated the borders of Turkish air space, the Turkish leadership had, in essence, taken the side of IS.
Judging by everything, the action was deliberate and pre-planned, and pursued a very definite purpose.
[Lavrov] noted in connection with this Turkey's participation in the illegal trade of oil with IS, which goes through the area where the plane was downed, and about the deployment there of terrorist infrastructure, weapons and ammunitions caches, control centers.
The downing of the Su-24 by Turkey yesterday will make a solution to the Syrian crisis even harder, but Russia is not likely to retaliate against Turkey commercially or militarily, says analyst Ali H.Soufan of the Soufan Group think tank.
[The] most unfortunate consequence will be that Russia will now roll back from its apparent willingness to consider solutions for Syria that do not depend on [Syrian President Bashar] Assad remaining in power. This is a key demand for Turkey, and in the macho world occupied by Erdogan and Putin, neither will want to appear to have blinked first...
The Russian phrase for "stab in the back" is now a hashtag on Twitter and is being used by Russians protesting against the downing by Turkey of a Russian Su-24 jet yesterday.
The hashtag has also been used by pro-Kremlin media outlets RIA Novosti and Life News for their tweets about the Su-24 incident.
The phrase was used by Russian President Vladimir Putin who said yesterday that the downing of the plane was a "stab in the back" by Turkey.
Several hundred people demonstrated outside the Turkish Embassy in Moscow today, hurling stones, bottles, eggs and tomatoes in protest after yesterday's downing by Turkey of a Russian jet in Syria, according to BBC Russian.
Photos of the demonstration and its aftermath are being shared on social media and the Russian phrase "Turkish Embassy in Moscow" is trending on Twitter in the Russian capital.
In some of the photos, banners with the slogan "Turkey - Stab In The Back" can be seen. Russian President Vladimir Putin said yesterday that the downing of the jet was a "stab in the back" by Turkey.
What Now? Experts Weigh In On Implications Of Russian Jet Downing
What are the wider implications after a Russian jet was shot down by Turkey close to the Syrian border?
By Christian Borys
Turkish President Recep Tayyip Erdogan says his country does not want an escalation in tensions with Russia, after its jets November 24 shot down a Russian SU-24 warplane that Ankara said had strayed into its airspace close to the Syrian border. One of the pilots was killed -- possibly by a Syrian rebel group operating in the area -- a loss Russian President Vladimir Putin called a "stab in the back."
To help understand the significance of the events, and what they mean going forward, we asked some of the world’s leading military experts and analysts to weigh in.
As well as its diplomatic response to the downing of the Su-24 jet, Russia has been responding militarily, launching heavy attacks today against rebel-held areas in Latakia province near where its jet was shot down by Turkey yesterday.
The attacks have targeted Turkoman gunmen as well as militants from Al-Qaeda's Syrian affiliate the Al Nusra Front, reports say.
The Britain-based activist group The Syrian Observatory for Human Rights said that there had been 12 Russian air strikes on the northern Latakia countryside.
The strikes occured as Syrian government forces clashed with Nusra and Turkoman militants in the Jabal Akrad and Jabal Turkman areas, according to Reuters, who are reporting this information from Turkoman fighters:
A Turkmen commander said missiles fired from Russian warships in the Mediterranean were also hitting the area, as well as heavy artillery shelling.
Hassan Haj Ali, the head of Liwa Suqour al-Jabal, a rebel group operating in western Syria, also said there were fierce battles in the area, with Russian aircraft supporting pro-government forces.
The Russian Su-24 jet crashed yesterday in the Jabal Turkman area.