BBC News with Sue Montgomery

The Iranian government has condemned European Union sanctions imposed in an attempt to stop Tehran's alleged nuclear weapons programme, calling them "illogical and unfair". A spokesman for Iran's foreign ministry said the measures were doomed to fail. The sanctions include a ban on imports of Iranian oil. The EU is Iran's second largest market. Gavin Hewitt reports.

The EU has taken what it regards as both tough and unprecedented action. It has imposed an oil embargo on Iran and frozen the assets of its central bank. The EU buys 600,000 barrels of Iranian oil each day - that's 20% of Iran's output. Underlining the gravity of the situation, David Cameron, Chancellor Merkel and President Sarkozy issued a joint statement. In it, they said "Our message is quite clear. We have no quarrel with the Iranian people, but we will not accept Iran acquiring a nuclear weapon."

The Kenyan President Mwai Kibaki has called for calm after the International Criminal Court in The Hague announced it's charging four senior politicians with crimes against humanity. The accused include two presidential candidates Uhuru Kenyatta and William Ruto. They are alleged to have been behind the violence that followed the 2007 election, during which more than 1,000 people died. Both have rejected the allegations. President Kibaki says that he's referred the ruling to Kenya's attorney general. But a spokesman for the ICC has told the BBC that the both accused may not be able to appeal against going to trial.