Thousands of people attended the funerals Monday of five Russian nuclear engineers killed by an explosion as they tested a new rocket engine, a tragedy that fueled radiation fears and raised questions about a secretive weapons program.

The Russian opposition vowed to stage another mass rally Saturday despite increasing pressure from authorities, who arrested nearly 1,400 people at a protest last week and have launched a criminal probe into the movement.

The South Korean military fired two warning shots at a Russian military aircraft that entered South Korean airspace on Tuesday, the Ministry of National Defense in Seoul said, and Chinese military aircraft had also entered South Korean airspace.

US President Donald Trump said on Tuesday it is “not fair” to either Turkey or the United States that Washington cannot sell Ankara billions of dollars worth of F-35 fighter jets after it bought a Russian air defense system.

On Monday, CNN published a report based on “exclusive documents”, said to have been obtained by the media outlet, claiming that WikiLeaks founder Julian Assange worked with alleged Russian hackers and other intelligence officials in a bid to damage Hillary Clinton’s reputation and ruin her 2016 presidential run.

Turkish President Tayyip Erdogan said on Monday that the Russian S-400 missile defense system, parts of which have been delivered to Turkey over the past four days, would be fully deployed in April 2020.

A Russian shipment carrying the first components of the S-400 surface-to-air defense system landed in Turkey on Friday, in a move that has been opposed by the Pentagon and could damage Turkey’s relationship with the United States and other NATO allies.

Turkish President Recep Tayyip Erdogan said on Saturday that there have been no delays in the delivery of Russian S-400 air defense missiles to his country.

Generally, when discussing air-defense systems here, we are referring to Russian devices that have become famous in recent years, in particular the S-300 (and its variants) and the S-400.

Generally, when discussing air-defense systems here, we are referring to Russian devices that have become famous in recent years, in particular the S-300 (and its variants) and the S-400. Their deployment in Syria has slowed down the ability of such advanced air forces as those of the United States and Israel to target the country, increasing as it does the embarrassing possibility of having their fourth- or fifth-generation fighters shot down.

Turkey will start getting S-400 Russian anti-missile systems within two months amid escalating dispute between Ankara and Washington over the purchase of Russian anti-missile system.

The acting head of the Pentagon has sent a letter to a Turkish defense minister, detailing the US plan to exclude Ankara from the F-35 stealth fighter jet program over its acquisition of the Russian S-400 air defense systems.

The United States is reportedly considering suspending training for Turkish pilots on advanced F-35 fighter jets, as Ankara moves ahead with plans to purchase a Russian missile defence system despite objections from Washington.

Austria raced on Saturday toward a snap election as Chancellor Sebastian Kurz pulled the plug on his coalition with the far right after its leader was caught on video offering to fix state contracts with a woman posing as a Russian oligarch’s niece.

US Secretary of State Mike Pompeo, Russian President Vladimir Putin and Foreign Minister Sergey Lavrov discussed a range of security issues during separate meetings in Sochi, including the situations in Iran and Venezuela, and have agreed to take concrete steps on arms control while expressing hope for improving the bilateral relationship.

According to a bill published on the Russian government’s website of legal information, the Federal Antimonopoly Service of Russia suggested to raise the price of gas for residents of the Crimea and Sevastopol.