The left parties are like street dogs that keep on barking whole day and all the time. They are afraid of biting. If they are really thinking of the country and and its welfare and id they think that the country's sovereignty will be compromised if this deal is done, then they should withdraw support to the government. They are committing a crime and going against their self conscious. They are afraid of BJP coming into power and hence they will not withdraw. Such parties should be banned and people sent to jail for anti-India activity as they are themself aware that they are committing a crime.