LONDON/KARACHI- Muttahida Qaumi Movement (MQM) chief Altaf Hussain has called upon Pakistan Tehreek-e-Insaaf and Pakistan Awami Tehreek to withdraw their ultimatums to the government. He also urged all sides to keep doors of dialogue open and proposed that government should consider genuine demands of PTI and PAT. While addressing his workers, Imran Khan warned that protestors could even storm into the Parliament House and Prime Minister House.