Moscow has repeated a threat to demand further cuts in the number of U.S. diplomatic personnel in Russia.
Two Indian Air Force commandos and two suspected militants have been killed during a gunbattle in Indian-administered Kashmir, the army says.
The Spanish government is holding an emergency cabinet meeting and Prime Minister Mariano Rajoy is due to address parliament, a day after separatist leaders in Catalonia signed what they called a declaration of independence from Spain.
The Pentagon has dismissed as "absolutely false" Kremlin accusations that the United States is "pretending" to fight Islamic State (IS) militants in Syria and Iraq, in the latest sign of rising tensions between Moscow and Washington.
Catalan leader Carles Puigdemont has said that the region "earned the right to independence" from Spain, but added that any declaration of independence would be suspended to facilitate a dialogue with Madrid.
Russian President Vladimir Putin has called for regulation of cryptocurrencies such as bitcoin, saying they carry "serious risks."
The leader of Catalonia, Carles Puigdemont, is due to address the regional parliament on October 10 amid concerns in Madrid that parliament may vote for a unilateral declaration of independence.
A Russian warplane veered off a runway at the country's air base in Syria and suffered damage, killing its crew, the Defense Ministry in Moscow said.
During a visit to Kyiv, Turkish President Recep Tayyip Erdogan has said that his country will continue to support Ukraine's sovereignty and territorial integrity.
The Russian Justice Ministry has warned Radio Free Europe/Radio Liberty that it may impose restrictions on some of the broadcaster's operations in Russia in response to what Moscow claims is pressure on Russian state-funded outlets in the United States.
The Nobel Prize for economics has been awarded to U.S. economist Richard Thaler for work focusing on "understanding the psychology of economics."
The Washington Post is reporting that Google has for the first time uncovered evidence that Russian operatives used the Internet giant's platforms in an effort interfere in the 2016 U.S. presidential election.
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