Prime Minister Narendra Modi on December 8, wrote to SAARC secretariat on the 35th anniversary of the grouping's founding and in an oblique reference to Pakistan, Modi said it is critical to fight the scourge of terrorism by all countries for this forum to make progress, reports India Today. Modi said that India's efforts for greater collaboration among the SAARC countries have repeatedly been challenged with threats and acts of terrorism. "SAARC has made progress, but more needs to be done. Our efforts for greater collaboration have repeatedly been challenged with threats and acts of terrorism. Such an environment impedes our shared objective of realising the full potential of SAARC," Modi added.