The US has usually been the decisive voice of calm, but its influence has waned under Trump
During previous bouts of militarised aggression between India and Pakistan, US presidents used personal diplomacy to convince both sides to pull back from the brink.
Such was the case in 1999 during the Kargil war and then again in 2002. Similarly in December 2008 Condoleezza Rice, then US secretary of state, travelled to India to persuade the government to pull back from a planned severe response after the Mumbai attacks, putting the onus on Pakistan to cooperate transparently.
Link : Who will pull India and Pakistan back from the edge this time?