Each side has domestic reasons to prolong the conflict.
The US also hopes to establish a diplomatic presence in Tehran for the first time in 30 years, according to the Guardian newspaper.
Critics say The International Criminal Court's move Monday to indict Sudan's president for war crimes may hamper peace.
As dispute persists in wake of presidential election, the country seems poised between negotiated settlement and outright civil war.
The pending charges by the international court have put the UN on edge, as it fears reprecussions against its peacekeepers in Darfur.
Plaintiffs plan to appeal, saying peacekeepers failed to protect their relatives in the 1995 Srebrenica massacre.
The African Union is expected to discuss the issue in Egypt Monday, one day after Mugabe declared a 'sweeping victory' in Friday's presidential runoff, which was widely condemned as a sham.
Israel's cabinet approved a controversial prisoner swap of 'terrorists' to recover two soldiers abducted in 2006.