So-called "red line" statements made by Russian officials may have dwindled from 24 in 2022 to 15 last year, according to Kyiv Post analysis, but the notion of an uncrossable limit for Moscow was ...

Red lines can be an effective form of deterrence. NATO is marking its 75th anniversary this year. It famously has Article 5, which says an attack against one NATO member is an attack against all.

July 21 (UPI) -- Mohammed Abdulsalam, the head spokesman for Yemen's Houthi movement, promised Sunday that there are "no red lines" in the response by the Yemeni armed faction to an attack carried ...

LONDON, Sept 27 (Reuters) - President Vladimir Putin has drawn a "red line" for the United States and its allies by signalling that Moscow will consider responding with nuclear weapons if they ...

Some in Ukraine and West see Putin's red lines as a bluff Russian foreign minister tells US they are no joke He says US is losing sight of mutual deterrence principles MOSCOW, Sept 4 (Reuters ...