Russia is preparing for an all-out war with NATO to happen sooner than originally believed: ISW

• Russia is ramping up its preparations for a "large-scale" war with NATO, says a US think tank.
• The ISW said Russian efforts at reviving its economy aren't just about fighting Ukraine. 
• Instead, Russia could be readying itself for a war with NATO that may occur sooner than expected.

Russian leader Vladimir Putin's focus on reviving the Russian economy isn't just about funding the country's war on Ukraine, the Institute for the Study of War (ISW) said on Wednesday.