Wall Street Journal reporter detained in Russia on suspicion of espionage.

A Wall Street Journal reporter has been detained by Russian authorities on suspicion of spying. The journalist, who has not been named, is a US citizen and was detained on Friday in Moscow. The Wall Street Journal has called for his immediate release and said it is "gravely concerned" about his safety. The Russian Federal Security Service (FSB) said the journalist was caught "carrying out an act of espionage".