WASHINGTON (AP) — Fresh voices in the U.S. Senate are speaking loudly on foreign policy, a new generation of Republicans and Democrats who reflect a war-weary nation cautious about America’s next moves.

Sens. Kelly Ayotte of New Hampshire and Rand Paul of Kentucky stand on either side of the growing divide in the GOP, pitting those who favor more robust U.S. engagement overseas against an isolationist’s deficit-driven concerns about the cost of foreign entanglements. Ayotte, a self-described Ronald Reagan Republican, is moving ahead with a new batch of sanctions against Russia in retribution for the annexation of Crimea and to send a clear signal to Moscow about further aggression.