By Peter Graff LONDON (Reuters) – Now that Russian President Vladimir Putin has recognised the independence of separatist enclaves in eastern Ukraine and ordered in “peacekeeping” troops, the big question is: where will he stop? Western countries have been warning for weeks that Moscow may be preparing for a possible all-out massed invasion to conquer its neighbour. Russia denies this, and Putin’s moves so far have stopped well short of such a scenario. But a televised address by Putin on Monday night – in which he characterised the Ukrainian state and its leaders as illegitimate – added to fe…