A vote for opposition leader Morgan Tsvangirai in Zimbabwe's June 27 run-off election will be akin to an act of war, Vice-President Joseph Msika was quoted as saying on Thursday.
Zimbabwe's opposition is under intense political and violent pressure to agree to call off a second round of presidential elections in a fortnight and join a coalition government.
Angolan President Jose Eduardo dos Santos confirmed on Wednesday that the country's first parliamentary elections since the end of a 27-year civil war will be held on September 5.
Zimbabwe opposition leader Morgan Tsvangirai and several of his top lieutenants were detained by police on Wednesday in the approach to a key run-off presidential election on June 27, his party said.
Zimbabwean President Robert Mugabe's Zanu-PF party said on Wednesday it would deploy more war veterans to campaign in some opposition areas ahead of a presidential election run-off.
The current climate in Zimbabwe was "not at all" the proper one for an election, Ugandan President Yoweri Museveni said in an interview broadcast on Tuesday.