UK General Election 2015

[Rollo]

How can you be genuine left and at the same time support islamists, hamas, ayatollahs, extremists and also Putin???

The American left/right and what the definitions of conservative/liberal are, bear no relation to the sense which the rest of the world uses.
This weird terminology seems to be leaking out of America across the internet. It's like the word "check" for "cheque" and thinking that Fox News is "fair and balanced".

The left right scale is an economic scale, with leftist politics advocating collectivism (usually with government ownership of things); whilst the right is concerned with Laissez-faire economics and the belief that markets and prices should be left alone.

Gandhi and Stalin both advocated leftist politics, though they would have totally disagreed on Authoritarian/Libertarian grounds.
Putin as an ex-officer in the KGB, did live in a leftist authoritarian climate and he if anything, has shifted Russia back northwards. The USSR was both leftist and authoritarian.

This might be instructive: http://www.politicalcompass.org/

Also: http://www.politicalcompass.org/uk2015
Nominally, Corbyn's election is a reflection that Labour wants to move in a southwesterly direction on the compass.

Politics is far more complex than just shouting three word slogans at each other (we've just had a change in premiership in Australia because our last PM didn't realise that) and if you'd actually bothered to read the article you posted you would have seen that:

In his talk, entitled “The Case for Iran,” he called for the immediate scrapping of sanctions on the country, which had not then promised to restrict its nuclear programme, attacked its colonial exploitation by British business and called for an end to its “demonisation” by the West.

That's a move away from a more authoritarian stance and Corbyn's wishes to re-nationalise the railways and re-open some mines, is a shift towards the left.