Washington: 'Enormously concerned' over recent increase in tensions between India and Pakistan, US Secretary of State John Kerry has spoken with Pakistan Prime Minister Nawaz Sharif to work out how to tamp them down, acknowledging that the latter had just finished a conversation with Indian Prime Minister Narendra Modi.

The increase "in the tensions publicly between India and Pakistan" over India's surgical cross border strike against militants in Myanmar, was "of enormous concern to all of us for all the obvious reasons," he said via teleconference Tuesday.