The G20: if this is war it’s definitely spring 1939.

It’s quiet. Expectation is high – but no one knows what it is actually going to happen.

The Germans have not yet reached London, the French haven’t retreated (though Sarkozy is threatening to leave at the first sign of trouble) and as ever, we are hoping the Americans will save the world.

Here at Westminster Central Hall, as D-Day approaches, 50 bloggers from around the world are being briefed before heading to the Excel Centre tomorrow.

Our communications chief Adrian Lovett is delivering a rabble-rousing pep talk as I type.

We bloggers will be inside the G20 meeting and will be blogging, Tweeting and YouTubing live from the most important meeting in the UK since Gleneagles.

Lives hang on this. If we get our messages out there, so that the world can hear and see what is happening – in real time – and so that global citizens can hold leaders to account, then children’s lives will be saved.

I am tapping away on my phone knowing that by blogging, I may make a difference. This is democracy in action.

How exciting!