Is There a Red Line That Would Trick?

Is there any red line that, if puton, does cross, would trick? As once again, the international community has come out very strongly against him. What is the red line that he crosses that that does catl the international community and ornado omtument militarily intervene? Is it strictly the expansion of the war to eithera nato, another nato country, or, let's call it, a nato adjacent, nato friendly, other baltic or eastern european nation other than maldova? I think that's almost the only circumstance wherea, the war would be escalated.