Russia, Ukraine and Zelenskyy
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The FSB said a Russian citizen named Lyubomir Korba was detained in Dubai on suspicion of carrying out the shooting.
Horrifying video footage shows the moment a giant fireball erupted in Russia, launching flames more than 300-metres into the sky after petrol tanker cars on a freight train caught fire.
U.S., Russian and Ukrainian negotiators are back around a table for a second round of technical talks, but in Kyiv, Russian bombs bring suffering and skepticism.
Russian President Vladimir Putin has discussed the burgeoning economic cooperation between Moscow and Beijing and their relations with the United States in a video call with Chinese leader Xi Jinping.
A Russian official said Moscow is ready to respond with military measures if the United States deploys its missile defense program to Greenland.