Rationally discuss?...well, you brought up 1930's Germany & the SNP. I never mentioned them at all, so who's ranting & veering off topic?. I was merely comparing the cost of running a TV station to the cost of upping our number of missiles. Calm down dear....Ah yes, that irregular verb, to rant.
I rationally discuss.
He is off-topic.
Is that ranting as in throwing in scatological comments and off-topic as in weapons of mass destruction?
All this entertainment and it hasn't cost me £170.