British Prime Minister Gordon Brown says his government will seek more sanctions against Iran for its controversial nuclear program.
Brown made the comment after talks Tuesday in London with Israeli Prime Minister Ehud Olmert.
Israel has been lobbying for tougher sanctions against Tehran for its refusal to suspend uranium enrichment.
Mr. Brown spoke before Iran's new nuclear negotiator Saeed Jalili and his predecessor, Ali Larijani, were to discuss Iran's nuclear program with European Union foreign policy chief Javier Solana in Rome.
Larijani resigned as top nuclear negotiator Saturday. But he remains a member of Iran's Supreme National Security Council as a representative of supreme leader Ayatollah Ali Khamenei, who has the final say on all policy matters.
In another development, Iranian President Mahmoud Ahmadinejad cut short his two-day visit to Armenia to return home Tuesday.
An Armenian presidential spokesman, Viktor Sogomonian, said Mr. Ahmadinejad's move was prompted by what he called "unexpected developments in Iran." He did not elaborate.
The Armenian government said the Iranian president today had been scheduled to visit a memorial to the victims of what Armenians consider to be genocide at the hands of Ottoman Turkey in the early 20th century.
The United States and other Western countries accuse Iran of secretly trying to build a nuclear weapon. Tehran denies the charge, saying its nuclear program is for peaceful purposes.
The United Nations Security Council has already imposed two sets of sanctions on Iran for its nuclear program.
Some information for this report was provided by AFP, AP and Reuters.