I strongly welcome the decision by the US Administration to send their senior diplomat, Bill Burns, to tomorrow's meeting of the E3+3 (UK, France, Germany, Russia, China and US), led by EU High Representative Javier Solana, with Iranian nuclear negotiator Saeed Jalili, who is due to respond to the package of economic, scientific and political cooperation offered to Iran for suspending their nuclear enrichment programme. The message to Iran is simple: get serious about the real needs of your people, which are for a serious response to year on year diminution in their standard of living, and abandon the fiction that the world is pursuing a vendetta against you. America's move demonstrates the determination of the E3+3 to avoid room for any excuses. It is now Iran's next move. There is a clear basis for negotiation. It needs to be taken up.