Russian President Vladimir Putin on Friday said that any direct contact or direct clash of NATO troops with the Russian army would lead to a “global catastrophe”. Addressing the news conference in Kazakhstan’s capital Astana, Putin said, “In any case, direct contact, direct clash of (NATO) troops with the Russian army is a very dangerous move which could lead to a global catastrophe. I hope that those who are saying this are smart enough not to take such a step.” Stay with TOI for all updates: