ISLAMABAD - Pakistans Ambassador to the United States Hussain Haqqani would reach Islamabad today and meet President Asif Ali Zardari and Prime Minister Syed Yousuf Raza Gilani to explain his position about alleged role in the memogate scam. Well-placed sources told TheNation on Saturday that Ambassador Haqqani was travelling by Qatar Air flight scheduled to land at Benazir International Airport Islamabad at 5:30 a.m. He has been summoned by Islamabad to explain his role in an alleged plot by President Asif Ali Zardari to oust his army and intelligence chiefs that led to strained relations between President Zardari and military establishment. Sources privy to these developments said the President and his party were stuck in what could be described as 'catch 22 situation, therefore they were ostensibly weighing two options to wriggle out the crises. They believe that in the given situation, President and Prime Minister after giving patient hearing to the ambassador might straightaway ask him to submit his resignation in a bid to bring the controversy to an end and appoint new ambassador. But this type of troubleshooting attempt, many believe, might aggravate the situation because if he was sacked without any plausible justification, the responsibility of alleged plot would eventually confront the President. That is why one of the sources said that President and his party were seriously considering the second option to defend the ambassador at all costs. They were of the view that President and Prime Minister could ask Ambassador Haqqani to face the official inquiry, in which he has got bright chances of getting a clean-chit, largely for lack of evidence. With this possibility in mind that there was no substantial evidence against Ambassador Haqqani, President Zardari and the PPP would back him by launching propaganda campaign against Mansoor Ijaz and establishing him as a liar and conspirator working for anti-Pakistani lobbies in the United States. The sources also attached importance to Ambassador Haqqanis eleventh hour meeting with the US Ambassador Marc Grossman, arguing that the US authorities might try to defuse the situation by prevailing on Pakistans military leadership. Contrary to these accounts, several PPP leaders believe that Ambassador Haqqani will have to go, as a decision to remove him had been taken much earlier and he might be offered another job in the government. On the other hand, some sources were of the view that it would not be easy for President Zardari to get rid of the scam, as the main opposition party PML-N has already decided to move the Supreme Court within 10 days if the government failed in instituting independent probe into the scam. In that case, the sources believed, Hussain Haqaani and his backers would face serious trouble, as they would be hunted by fears that in case they are found guilty of the act the Supreme Court might be asked to invoke Article 6.