Yalta and Syria....the big bear still growls

I'm currently reading the final volumes of Winston Churchill's History of the Second World War, and how he, Stalin and Roosevelt set up the tentative agreement that the United Nations would preside over future world safety - but that any initiative by the council to invade a country would have the power of veto by any one of "the big five": the US, the UK, France, and (later) China. And of course, Russia.

This uneasy agreement still has its ructions today, with Vladimir Putin vetoing any intervention by the UN into Syria. Where innocent Poles suffered under Stalin, so innocent Syrians are suffering under Putin's Russian-supplied chemical weapons.