(at) daggers drawn idiom UK
冷战（的），相互戒备（的）
If two people, countries, etc. are at daggers drawn, they are in a state of extreme unfriendliness and do not trust each other.
The two sides have been at daggers drawn for some months now with no sign of improvement in relations. 双方一连冷战了好几个月，到现在依然没有任何缓和的迹象。