The British delegation walked out on Iranian President Mahmoud Ahmadinejad at the UN General Assembly when he spoke early this morning.

Our Twitter campaign to David Miliband and Downing Street generated nearly 200 messages calling for the UK to walk out when Ahmadinejad spoke. These included many messages from Iranian democracy campaigners.

Yesterday afternoon, David Miliband responded directly to the Twitter campaign. In response to Khoshkeledoc, an Iranian tweeter who had joined the campaign, Mr. Miliband tweeted:

“You’re right the issue is very serious. Walkout depends on what he says. Massive billboard cruising ny in protest.”

Once Mahmoud Ahmadinejad began to speak, it didn’t take long for his inevitable criticism of Israel to veer into classic antisemitic themes. When he said

“It is no longer acceptable that a small minority would dominate the politics, economy and culture of major parts of the world by its complicated networks, and establish a new form of slavery, and harm the reputation of other nations, even European nations and the US, to attain its racist ambitions”

then the British delegation walked out of the General Assembly chamber. Sweden, France, Italy, Germany, Australia, New Zealand, the USA, Canada, some South American countries and Israel also walked out or refused to go in at all.

A spokesman for the UK’s UN delegation explicitly said that their walkout was triggered by Ahmadinejad’s “antisemitic” rhetoric.

Well done to everyone who joined the Twitter campaign.