Leader of Opposition in the National Assembly Syed Khursheed Shah said on Tuesday that only Nawaz Sharif could explain to everyone what he means by a 'movement for justice'.

"Is he planning to create a new political party and call it Tehreek-i-Adal to face off against Imran Khan's Tehreek-i-Insaf," Shah quipped while speaking to media representatives at the National Assembly.

"We have always advised Sharif to not start altercations with institutions. The parliament is also an institution which all other institutions take help from, a war between our institutions will not work in Pakistan's favour," Shah warned.

Commenting on the army chief's presence at the Senate this morning, Shah said, "There is nothing out of the ordinary about this and the army often takes the Senate into confidence, even the former army chief Gen Raheel Sharif briefed us in the past."

"Briefings from the army leadership are a welcome development for the parliament, which is why a joint session should be called for such occasions," Shah concluded.

Earlier in the day, Chief of Army Staff Gen Qamar Jawed Bajwa briefed the Senate Committee of the Whole House on national security during an extraordinary in-camera session presided over by Senate Chairman Raza Rabbani.

Speaking to the media after the briefing, Director General (DG) ISPR Asif Ghafoor said that the Director General of Military Operations (DGMO) Maj Gen Sahir Shamshad Mirza "talked about the geo-strategic environment from a security lens, informed the Senators about threats to national security, gave an update on the war on terror and future plan of action."

He said that the briefing went on for an hour and a half, followed by a "very candid, very free, very frank, very objective" question-answer session.

"When we are together, no one can defeat us," DG ISPR said.

However, he refrained from making a detailed comment on the briefing and said that a detailed press conference will be held in the next few days.