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.
The MDC is now forced to mend rifts with smaller parties in a bid to unite against President Robert Mugabe's alleged effort to rig the March 29 elections.
Top ruling party members are jittery about being tried in international courts.
Leaders of the southern African region met in Zambia this weekend for an emergency summit on Zimbabwe's increasingly tense electoral impasse.