PUTIN

With numerous countries conducting airstrikes over Syria, coordination is needed more than ever.

Russian President Vladimir Putin continued his country's war of words with Turkey in the wake of last month's downing of a Russian bomber by Ankara.

Russian authorities said a power bridge would restore some electricity to Crimea by Dec. 20 as Ukrainian activists vow to completely isolate the annexed territory.

An explosion in Istanbul, which may have been a bomb, caused chaos and wounded five people on Tuesday.

Turkish President Recep Tayyip Erdogan denied Putin's accusations, saying he'll leave office if they are proved true.

Russian Prime Minister Dmitry Medvedev ordered his government to draw up measures that would include freezing some joint investment projects and restricting food imports from Turkey.

The Islamic State group has released a new video hailing their supposed successes and taunting world powers to try to defeat them.

“It is the call to glory and adventure that moves these young people to join the Islamic State,” a terrorism expert told the U.N.'s counterterrorism committee.

After a Russian warplane went down near the Syria-Turkey border Tuesday, most state-owned media in Russia stressed that the plane had been flying over Syria, not Turkey.

Concerns that Turkey's shooting down a Russian warplane could lead to a world war emerged on social media.

The Islamic State group "has big money, hundreds of millions -- or even billions -- of dollars, from selling oil," the Russian president said.

The debacle underscores rising hostilities between Ankara and Moscow, as the two countries –- despite being strong trade partners –- have not seen eye to eye over Syria.

The future of Russia’s leading independent media is in doubt after foreign owners are quitting Russia in the wake of a new law that bans foreign ownership.

Many Parisians say France's actions in Syria, and the high number of French fighters in the Islamic State group, could lead to new acts of terrorism in their city.

The non-economic statement is a rare one for the Asia Pacific Economic Cooperation group.

The Russian president placed a $50 million reward for information on those responsible for the Russian airliner crash in October.

Islamic State group fighters get firearms from fleeing or deceased soldiers and from shipments across borders -- with increased access when conflicts heat up.

The Russian president said the group has received support from some of the nations in attendance at the G-20 summit.  

Salman proposed the creation of a United Nations organization to combat terror, and pledged some $110 million.

The kingdom appears more likely than ever to come to the negotiating table and work for a permanent solution in Syria, some experts say.

The two leaders huddled together before the opening session of the Group of 20 summit in the Turkish city of Antalya.