Bad stuff for the Iranians, but hardly unprecedented. According to this graph back in 1990 Brazil hit an inflation rate of over 6,000% !! At that point it becomes so mindnumbing as to be meaningless. They did put their house in order and the current rate is ~5%, while the US may hit a monthly rate of 2% by Valentine's Day.

There is really no need for a military strike on Iran. However, the Israeli side keeps demanding that somebody do something about Iran somehow. I'm sorry, but I'm tired of people subcontracting out their problems on us. The larger discussion should be as to why we're still allies with and supply arms and money to a needlessly fractious regional power.

America! I could teach you, but I'd have to charge.

Eyeballing the chart, I get 55% monthly.  I don't think they give an exact monthly figure.  That's still ((1.55^12)-1)*100 = 20,000% annually.

It's still not obvious to me they definitely have hyperinflation.  Clearly, this level of price increases if continued constitutes hyperinflation, and probably it  will continue, but given only the presented data it could also reasonably be a one-time readjustment to the sanctions, if they're not reflected in prices of domestic products.  Equally well the trade shock could be reflected in domestic prices with a level of inflation which decreases with time instead of increasing.

I think we need to be more clear about what we mean by "working".  Clearly the Iranian economy is doing very poorly, but it wasn't doing well before.  Now the Iranian government can blame their already poor economic performance on enemy action.  If anything, it leaves them more entrenched than without the sanctions.  Like North Korea, there's really no reason to believe that poor general economic performance should lead to the abandonment of the Iranian nuclear program, which was our goal in the first place.

Even conservatives (in America, at least) seem to be realising that invading Iran and setting off some general regional war doesn't really make any sense. Why corner Iranians into supporting their economically incompetent government with blood (as they did when Iran was fighting Iraq) when you can wait for young Iranians sick to death of austerity and social constipation to catch Arab Spring Syndrome and finish what they started when Ahmadinehad stole his second presidential term with Khamenei's blessing?  

Britain and France
Didn't want to dance
But I hate Khamenei
So I thought I'd take a chance and
Bomb Iran
Bomb bomb, bomb bomb Iran
Bomb Iran
Bomb bomb, bomb bomb Iran
We've got 'em rockin and a'rolling
Rockin' and a'reelin'
Bomb Iran
Bomb bomb, bomb bomb Iran

Love shock 'n awe
Never saw a flaw
Israel was sore
So I thought I'd start a war and
Bomb Iran
Bomb bomb, bomb bomb Iran
Bomb Iran
Bomb bomb, bomb bomb Iran
We've got 'em rockin and a'rolling
Rockin' and a'reelin'
Bomb Iran
Bomb bomb, bomb bomb Iran

Never had a clue
Precisely what to do
But I've wished we could do this
Since 1982
Bomb Iran
Bomb bomb, bomb bomb Iran
Bomb Iran
Bomb bomb, bomb bomb Iran
We've got 'em rockin and a'rolling
Rockin' and a'reelin'
Bomb Iran
Bomb bomb, bomb bomb Iran