Khanna, also an active politician, was suffering from cancer and was admitted to hospital earlier.
The latest purge is over alleged links to US-based Islamic preacher Fethullah Gulen.
Steve Rosenberg gains rare access to Russia's Arctic Brigade, close to the border with Finland.
The country accuses the regional grouping of meddling in its affairs, as deadly protests continue.
Passengers will be given up to $10,000 if they volunteer to forfeit seats on overbooked flights.
Donald Trump's strategy aims to apply both economic and diplomatic pressure on Kim Jong-un.
President Trump seeks to renegotiate the trade deal with Canada and Mexico, rather than abandon it.
A survey suggests the majority of Australians think national drinking habits are excessive.
Eric Frein killed an officer before hiding in the Pennsylvania mountains in 2014, sparking a manhunt.
MPs reject a bid to allow the president to seek re-election, four weeks after it triggered riots.