New Delhi, Oct 21 (ANI): External Affairs Minister Salman Khurshid on Sunday termed the multiple ceasefire violations by Pakistan along the Line of Control (LoC) as 'regrettable', and said the only constructive way forward for the relationship between the two countries was if Pakistan dismantled its infrastructure of terrorism, delivered justice in the Mumbai terror attacks of 2008 and made a sincere effort to comply with the ceasefire along the border.