Russia Worried Over Conventional ICBMs
I was afraid this might happen, from Spacewar:
Gen. Yury Baluyevsky, chief of the General Staff of Russia's Armed Forces, suggested the launch of the missiles carrying non-nuclear warheads could lead to members of the nuclear club launching a counterstrike.
"This [the use of non-nuclear ICBMs] may trigger an irreversible reaction in countries with nuclear arsenals because they will be unable to identify the type of warhead on a ballistic missile and its target," he said.
This is probably true. Still, its an intriguing idea, firing a conventional warhead against a terrorist or rogue state in a matter of minutes rather than hours or days.