The UN chief and his Syria envoy said Saturday they are prepared to broker peace talks between the regime and opposition, as Damascus ally Iran said Bashar al-Assad would stand again for president in 2014. A joint statement by Ban Ki-moon and Lakhdar Brahimi said the UN would \"be prepared to facilitate a dialogue between a strong and representative delegation from the opposition and a credible and empowered delegation from the Syrian government.\" They met after both sides in Syria had indicated a \"willingness to engage in dialogue,\" the UN said. \"Both expressed deep frustration at the failure of the international community to act with unity to end the conflict which has left over 70,000 dead and resulted in a massive human displacement within and outside of the Syrian borders,\" the statement said. They also warned that both the regime and opposition fighters \"have become increasingly reckless with human life\" and said perpetrators of war crimes and crimes against humanity must be brought to justice. In Tehran on Saturday, Iranian Foreign Minister Ali Akbar Salehi said Assad will take part in next year\'s presidential election and that it is up to the Syrian people to choose their own leader. He spoke during a visit by Syrian Foreign Minister Walid Muallem for talks on the nearly two-year conflict. At a joint news conference, Salehi said \"in the next election, President Assad, like others, will take part, and the Syrian people will elect whomever they want.\"