India, Sept. 2 -- International humanitarian organisations and global development experts are sharply rebuking the United States government, denouncing its initial relief contribution to Nepal as an "embarrassing and pitiful" response to one of the deadliest environmental disasters of the decade.

Following the catastrophic collapse of a Himalayan glacier that unleashed wall-to-wall torrents of mud and ice across northern districts, claiming hundreds of lives and leaving thousands missing, Washington announced an initial emergency allocation of five hundred thousand dollars.

Humanitarian watchdogs and policy analysts immediately flagged the modest financial package as wholly disproportionate to the colossal scale of devastation, pointing...