President Donald Trump’s administration is exploring hardening its approach toward Pakistan to crack down on Pakistan-based militants launching attacks in neighboring Afghanistan, two U.S. officials tell Reuters.

Potential Trump administration responses being discussed include expanding U.S. drone strikes, redirecting or withholding some aid to Pakistan and perhaps eventually downgrading Pakistan’s status as a major non-NATO ally, the two officials said, speaking on condition of anonymity.

Other U.S. officials are skeptical of the prospects for success, arguing that years of previous U.S. efforts to curb Pakistan’s support for militant groups have failed, and that already strengthening U.S. ties to India, Pakistan’s arch-enemy, undermine chances of a breakthrough with Islamabad.

U.S. officials say generally they seek greater cooperation with Pakistan, not a rupture in ties, once the administration finishes a regional review, due by mid-July, of the strategy guiding the 16-year-old war in Afghanistan.