Ongoing violence may impede a runoff between President Robert Mugabe and the opposition's Morgan Tsangirai.
China said Tuesday it may turn away a ship full of weapons headed for Zimbabwe's leader.
President Mugabe's electoral commission on Sunday delayed a recount of the March 29 vote, raising concerns of vote rigging.
Leaders of the southern African region met in Zambia this weekend for an emergency summit on Zimbabwe's increasingly tense electoral impasse.
The country's electoral commission said releasing results from the March 29 presidential vote would be 'dangerous' as international efforts for release of poll widened.
President Robert Mugabe is 'preparing for war,' according to the main opposition leader.
Zimbabwe's long-time ruler may be running out of options after Saturday's vote.
Zimbabwe's main opposition leader and President Mugabe's government deny behind-the-scenes talks about a power-sharing deal in the wake of Saturday's elections.