Whenever Indian and Pakistan leaders have shared a common platform, it has grabbed attention, transcending the importance of the event they have attended. So, it was without any surprise that the news that grabbed the spotlight during the Shanghai Cooperation Organisation meeting was the brief handshake and exchange of pleasantries between Prime Minister Narendra Modi and Pakistan President Mamnoon Hussain.At a time when relations between India and Pakistan have touched rock bottom, a handshake between leaders of two rival nations has more meaning than just the literal sense of the term. When Prime Minister Narendra Modi decided to stop over in Lahore on his way back to New Delhi from Kabul in 2015 to meet then PM Nawaz Sharif, it raised hopes that the stop-and-start negotiations between the nuclear-armed neighbours might finally make progress after three wars and more than 65 years of hostility.In 48 months as India’s PM, Modi has shaken hands with Pakistan leaders six times (taking into account his handshake with Mamnoon Hussian). Here are the instances:Then Pakistan PM Nawaz Sharif was the first to shake hands with the new PM Narendra Modi in 2014. * Sharif at Modi’s swearing-in ceremony (May 2014): Following the massive mandate in the 2014 elections, Modi had invited all the South Asian leaders to his swearing-in ceremony.