LONDON, Oct 25 (Reuters Breakingviews) – His war on Ukraine may not be unfolding according to plan, but President Vladimir Putin can still claim that the Russian economy is performing, as he says, “better than previously expected”. This kind of understatement is unusual for the Kremlin leader: with a tight labour market and inflation showing no signs of abating, the Russian economy is in fact overheating. Look beyond the surface, however, and it is clear not only that the current boom is temporary, but also that it is the prelude to a painful economic future. Putin has moved the economy…