President Jacob Zuma, as the chairperson of the SADC Organ on Politics and Defence, will chair the meeting, which will also discuss the pressing security issues in the Democratic Republic of Congo (DRC).
The one-day meeting comes after President Zuma visited Lesotho last week for consultation with King Letsie III on ways to end the political crisis in the mountain kingdom.
Lesotho’s Prime Minister Thomas Thabane did not meet last Friday’s deadline to reopen Parliament after rival political dealers deadlocked over the implementation of the SADC peace deal.
Thabane suspended parliament in June in an attempt to avoid a vote of no confidence that was pushed by his coalition partners.
The suspension, along with the dismissal of army chief Lieutenant General Tlali Kamoli, was believed to be among the factors that triggered an attempted coup late last month.