Because fuck the Minsk Accords, fuck the Eastern Ukrainian population bombed and kidnapped by neo Nazi for the last 8 years and Woe poor Ukraine who has said that Negotiations are over with Eastern rebels and had launched a sustained attack right after they were recognized by the Russian Federation as Free, Sovereign and Independent.
BTW, sanctions and economic warfare is not Threats. Those are hostile, aggressive actions, they aren't words. If you think Escalation is the key then please don't let me get you down:
FUCK YOU.