Destruction of its nuclear cooling tower was important but largely symbolic.
Exxon Mobil, Chevron, and Shell are among the prequalified companies vying for contracts.
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.
The opposition's pullout from Friday's vote raises pressure on Zimbabwe's leader.
Despite Russian and Serbian opposition, UN Secretary-General Ban Ki Moon said Friday the UN would gradually cede its role.
In Israel, the media focused on possible breakthroughs in which the US played no role, highlighting low expectations for Rice's trip.