Russian Troop Build-Up Near Ukraine Reduces Warning Time of Attack, NATO Says

NATO Secretary-General Jens Stoltenberg said on Monday a Russian military build-up near Ukraine's border was dangerous because it reduced the amount of warning time.

"The fact that we see this military build-up also reduces any warning time between a decision in Russia before they are able to actually conduct a military aggressive action against Ukraine," Stoltenberg told a news conference.