Imran Khas was expected to address Overseas Convention The speech has been postponed to party meetings PTI is gearing for vote of confidence in Punjab Assembly   ISLAMABAD: Pakistan Tehreek-e-Insaf (PTI) Chairman Imran Khan has postponed addressing a convention of Overseas Pakistanis due to party engagements, BOL News reported. Imran Khan was expected to an Overseas Convention via video link.